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2012-03-21Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs pile 1 from Al Viro: "This is _not_ all; in particular, Miklos' and Jan's stuff is not there yet." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (64 commits) ext4: initialization of ext4_li_mtx needs to be done earlier debugfs-related mode_t whack-a-mole hfsplus: add an ioctl to bless files hfsplus: change finder_info to u32 hfsplus: initialise userflags qnx4: new helper - try_extent() qnx4: get rid of qnx4_bread/qnx4_getblk take removal of PF_FORKNOEXEC to flush_old_exec() trim includes in inode.c um: uml_dup_mmap() relies on ->mmap_sem being held, but activate_mm() doesn't hold it um: embed ->stub_pages[] into mmu_context gadgetfs: list_for_each_safe() misuse ocfs2: fix leaks on failure exits in module_init ecryptfs: make register_filesystem() the last potential failure exit ntfs: forgets to unregister sysctls on register_filesystem() failure logfs: missing cleanup on register_filesystem() failure jfs: mising cleanup on register_filesystem() failure make configfs_pin_fs() return root dentry on success configfs: configfs_create_dir() has parent dentry in dentry->d_parent configfs: sanitize configfs_create() ...
2012-03-20debugfs-related mode_t whack-a-moleAl Viro
all of those should be umode_t... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20Merge tag 'tty-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/ttyLinus Torvalds
Pull TTY/serial patches from Greg KH: "tty and serial merge for 3.4-rc1 Here's the big serial and tty merge for the 3.4-rc1 tree. There's loads of fixes and reworks in here from Jiri for the tty layer, and a number of patches from Alan to help try to wrestle the vt layer into a sane model. Other than that, lots of driver updates and fixes, and other minor stuff, all detailed in the shortlog." * tag 'tty-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (132 commits) serial: pxa: add clk_prepare/clk_unprepare calls TTY: Wrong unicode value copied in con_set_unimap() serial: PL011: clear pending interrupts serial: bfin-uart: Don't access tty circular buffer in TX DMA interrupt after it is reset. vt: NULL dereference in vt_do_kdsk_ioctl() tty: serial: vt8500: fix annotations for probe/remove serial: remove back and forth conversions in serial_out_sync serial: use serial_port_in/out vs serial_in/out in 8250 serial: introduce generic port in/out helpers serial: reduce number of indirections in 8250 code serial: delete useless void casts in 8250.c serial: make 8250's serial_in shareable to other drivers. serial: delete last unused traces of pausing I/O in 8250 pch_uart: Add module parameter descriptions pch_uart: Use existing default_baud in setup_console pch_uart: Add user_uartclk parameter pch_uart: Add Fish River Island II uart clock quirks pch_uart: Use uartclk instead of base_baud mpc5200b/uart: select more tolerant uart prescaler on low baudrates tty: moxa: fix bit test in moxa_start() ...
2012-03-08TTY: remove re-assignments to tty_driver membersJiri Slaby
All num, magic and owner are set by alloc_tty_driver. No need to re-set them on each allocation site. pti driver sets something different to what it passes to alloc_tty_driver. It is not a bug, since we don't use the lines parameter in any way. Anyway this is fixed, and now we do the right thing. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Acked-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-02-13mmc: block: Init ro_lock sysfs attr to fix lockdep warningsRabin Vincent
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Johan Rudholm <johan.rudholm@stericsson.com> Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Namjae Jeon <linkinjeon@gmail.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-02-02TTY: use tty_standard_installJiri Slaby
Use the helper in the rest of the tty drivers. This is a simple replacement. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-01-13Merge tag 'mmc-merge-for-3.3-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc MMC highlights for 3.3: Core: * Support for the HS200 high-speed eMMC mode. * Support SDIO 3.0 Ultra High Speed cards. * Kill pending block requests immediately if card is removed. * Enable the eMMC feature for locking boot partitions read-only until next power on, exposed via sysfs. Drivers: * Runtime PM support for Intel Medfield SDIO. * Suspend/resume support for sdhci-spear. * sh-mmcif now processes requests asynchronously. * tag 'mmc-merge-for-3.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: (58 commits) mmc: fix a deadlock between system suspend and MMC block IO mmc: sdhci: restore the enabled dma when do reset all mmc: dw_mmc: miscaculated the fifo-depth with wrong bit operation mmc: host: Adds support for eMMC 4.5 HS200 mode mmc: core: HS200 mode support for eMMC 4.5 mmc: dw_mmc: fixed wrong bit operation for SDMMC_GET_FCNT() mmc: core: Separate the timeout value for cache-ctrl mmc: sdhci-spear: Fix compilation error mmc: sdhci: Deal with failure case in sdhci_suspend_host mmc: dw_mmc: Clear the DDR mode for non-DDR mmc: sd: Fix SDR12 timing regression mmc: sdhci: Fix tuning timer incorrect setting when suspending host mmc: core: Add option to prevent eMMC sleep command mmc: omap_hsmmc: use threaded irq handler for card-detect. mmc: sdhci-pci: enable runtime PM for Medfield SDIO mmc: sdhci: Always pass clock request value zero to set_clock host op mmc: sdhci-pci: remove SDHCI_QUIRK2_OWN_CARD_DETECTION mmc: sdhci-pci: get gpio numbers from platform data mmc: sdhci-pci: add platform data mmc: sdhci: prevent card detection activity for non-removable cards ...
2012-01-11mmc: card: Kill block requests if card is removedSujit Reddy Thumma
Kill block requests when the host realizes that the card is removed from the slot and is sure that subsequent requests are bound to fail. Do this silently so that the block layer doesn't output unnecessary error messages. Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-01-11mmc: boot partition ro lock supportJohan Rudholm
Enable boot partitions to be read-only locked until next power on via a sysfs entry. There will be one sysfs entry for each boot partition: /sys/block/mmcblkXbootY/ro_lock_until_next_power_on Each boot partition is locked by writing 1 to its file. Signed-off-by: Johan Rudholm <johan.rudholm@stericsson.com> Signed-off-by: John Beckett <john.beckett@stericsson.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-01-11mmc: core: check for zero length ioctl dataJohan Rudholm
If the read or write buffer size associated with the command sent through the mmc_blk_ioctl is zero, do not prepare data buffer. This enables a ioctl(2) call to for instance send a MMC_SWITCH to set a byte in the ext_csd. Signed-off-by: Johan Rudholm <johan.rudholm@stericsson.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-01-11mmc: mmc_test: align max_seg_sizePer Forlin
If max_seg_size is unaligned, mmc_test_map_sg() may create sg element sizes that are not aligned with 512 byte. Fix, align max_seg_size at mmc_test_area_init(). Signed-off-by: Per Forlin <per.forlin@stericsson.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-01-11mmc: card: Use manufacturer ID symbols in card quirks.Chris Ball
No functional change; adds macros for card manufacturer IDs. Signed-off-by: Chris Ball <cjb@laptop.org> Cc: Andrei E. Warkentin <andrey.warkentin@gmail.com> Cc: Stefan Nilsson XK <stefan.xk.nilsson@stericsson.com>
2012-01-03switch debugfs to umode_tAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-12-10mmc: core: Add quirk for long data read timeStefan Nilsson XK
Adds a quirk that sets the data read timeout to a fixed value instead of relying on the information in the CSD. The timeout value chosen is 300ms since that has proven enough for the problematic cards found, but could be increased if other cards require this. This patch also enables this quirk for certain Micron cards known to have this problem. Signed-off-by: Stefan Nilsson XK <stefan.xk.nilsson@stericsson.com> Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Cc: <stable@kernel.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-10-27mmc: core: add workaround for controllers with broken multiblock readsPaul Walmsley
Due to hardware bugs, some MMC host controllers don't support multiple-block reads[1]. To resolve, add a new MMC capability flag, MMC_CAP2_NO_MULTI_READ, which can be set by affected host controller drivers. When this capability is set, all reads will be issued one sector at a time. 1. See for example Advisory 2.1.1.128 "MMC: Multiple Block Read Operation Issue" in _OMAP3530/3525/3515/3503 Silicon Errata_ Revision F (October 2010) (SPRZ278F), available from http://focus.ti.com/lit/er/sprz278f/sprz278f.pdf Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Dave Hylands <dhylands@gmail.com> Tested-by: Steve Sakoman <sakoman@gmail.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-10-26mmc: core: Add cache control for eMMC4.5 deviceSeungwon Jeon
This patch adds cache feature of eMMC4.5 Spec. If device supports cache capability, host can utilize some specific operations. Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-10-26mmc: core: new discard feature support at eMMC v4.5Kyungmin Park
MMC v4.5 supports the DISCARD feature (CMD38). It's different from trim and there's no check bit. Currently it's only supported at v4.5. Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-10-26mmc: core: mmc sanitize feature support for v4.5Kyungmin Park
In the v4.5, there's no secure erase & trim support. Instead it supports the sanitize feature. Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-10-26mmc: replace printk with appropriate display macroGirish K S
All the files using printk function for displaying kernel messages in the mmc driver have been replaced with corresponding macro. Signed-off-by: Girish K S <girish.shivananjappa@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-10-26mmc: Add module.h to drivers/mmc users assuming implicit presence.Paul Gortmaker
We are cleaning up the implicit presence of module.h; these guys are some of the people who just assume it will be there. Call it out explitly for those that really need it. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-10-26mmc: core: general purpose MMC partition support.Namjae Jeon
It allows gerneral purpose partitions in MMC Device. And I try to simply make mmc_blk_alloc_parts using mmc_part structure suggested by Andrei Warkentin. After patching, we see general purpose partitions like this: > cat /proc/partitions 179 0 847872 mmcblk0 179 192 4096 mmcblk0gp3 179 160 4096 mmcblk0gp2 179 128 4096 mmcblk0gp1 179 96 1052672 mmcblk0gp0 179 64 1024 mmcblk0boot1 179 32 1024 mmcblk0boot0 Signed-off-by: Namjae Jeon <linkinjeon@gmail.com> Acked-by: Andrei Warkentin <awarkentin@vmware.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-10-26mmc: block: support no access to boot partitionsAdrian Hunter
Intel Medfield platform blocks access to eMMC boot partitions which results in switch errors. Since there is no access, mmcboot0/1 devices should not be created. Add a host capability to reflect that. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-10-26mmc: block: fix boot partition switch error pathAdrian Hunter
In the case of a switch error, do not update partition config as though the switch succeeded, and ensure blk_end_request is called on the failed request. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Andrei Warkentin <andrey.warkentin@gmail.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-10-26mmc: block: add eMMC hardware reset supportAdrian Hunter
For cards that support hardware reset (just eMMC), try a reset and retry before returning an I/O error. However this is not done for ECC errors and is never done twice for the same operation type (READ, WRITE, DISCARD, SECURE DISCARD) until that type of operation again succeeds. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-10-26mmc: mmc-test: add eMMC hardware reset testAdrian Hunter
MMC core provides a checking function that checks if the reset has happended. Add a test to use that function. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-10-26mmc: fix integer assignments to pointerVenkatraman S
Fix the sparse warning output "warning: Using plain integer as NULL pointer" Signed-off-by: Venkatraman S <svenkatr@ti.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-10-26mmc: queue: declare mmc_alloc_sg as staticVenkatraman S
Fix the sparse warning "drivers/mmc/card/queue.c:111:20: warning: symbol 'mmc_alloc_sg' was not declared. Should it be static?" Signed-off-by: Venkatraman S <svenkatr@ti.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-08-23block: separate priority boosting from REQ_METAChristoph Hellwig
Add a new REQ_PRIO to let requests preempt others in the cfq I/O schedule, and lave REQ_META purely for marking requests as metadata in blktrace. All existing callers of REQ_META except for XFS are updated to also set REQ_PRIO for now. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Namhyung Kim <namhyung@gmail.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2011-08-13mmc: core: use defined R1_STATE_PRG macro for card statusJaehoon Chung
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-08-13mmc: mmc_test: avoid stalled file in debugfsAndy Shevchenko
During card removal and inserting cycle the test file in the debugfs could be stalled until the host driver removes it. Let's keep the file in the linked list and destroy it when card is removed. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Per Forlin <per.forlin@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-07-21mmc: block: fixed NULL pointer dereferenceJaehoon Chung
We already check for ongoing async transfers when handling discard requests, but not in mmc_blk_issue_flush(). This patch fixes that omission. Tested with an SDHCI controller and eMMC4.41. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Per Forlin <per.forlin@linaro.org> Cc: <stable@kernel.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-07-20mmc: block: add handling for two parallel block requests in issue_rw_rqPer Forlin
Change mmc_blk_issue_rw_rq() to become asynchronous. The execution flow looks like this: * The mmc-queue calls issue_rw_rq(), which sends the request to the host and returns back to the mmc-queue. * The mmc-queue calls issue_rw_rq() again with a new request. * This new request is prepared in issue_rw_rq(), then it waits for the active request to complete before pushing it to the host. * When the mmc-queue is empty it will call issue_rw_rq() with a NULL req to finish off the active request without starting a new request. Signed-off-by: Per Forlin <per.forlin@linaro.org> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Venkatraman S <svenkatr@ti.com> Tested-by: Sourav Poddar <sourav.poddar@ti.com> Tested-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-07-20mmc: queue: add a second mmc queue request memberPer Forlin
Add an additional mmc queue request instance to make way for two active block requests. One request may be active while the other request is being prepared. Signed-off-by: Per Forlin <per.forlin@linaro.org> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Venkatraman S <svenkatr@ti.com> Tested-by: Sourav Poddar <sourav.poddar@ti.com> Tested-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-07-20mmc: block: move error path in issue_rw_rq to a separate function.Per Forlin
Break out code without functional changes. This simplifies the code and makes way for handling two parallel requests. Signed-off-by: Per Forlin <per.forlin@linaro.org> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Venkatraman S <svenkatr@ti.com> Tested-by: Sourav Poddar<sourav.poddar@ti.com> Tested-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-07-20mmc: block: add a block request prepare functionPer Forlin
Break out code from mmc_blk_issue_rw_rq to create a block request prepare function. This doesn't change any functionallity. This helps when handling more than one active block request. Signed-off-by: Per Forlin <per.forlin@linaro.org> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Venkatraman S <svenkatr@ti.com> Tested-by: Sourav Poddar <sourav.poddar@ti.com> Tested-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-07-20mmc: block: add member in mmc queue struct to hold request dataPer Forlin
The way the request data is organized in the mmc queue struct, it only allows processing of one request at a time. This patch adds a new struct to hold mmc queue request data such as sg list, request, blk request and bounce buffers, and updates any functions depending on the mmc queue struct. This prepares for using multiple active requests in one mmc queue. Signed-off-by: Per Forlin <per.forlin@linaro.org> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Venkatraman S <svenkatr@ti.com> Tested-by: Sourav Poddar <sourav.poddar@ti.com> Tested-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-07-20mmc: mmc_test: test to measure how sg_len affect performancePer Forlin
Add a test that measures how the mmc bandwidth depends on the numbers of sg elements in the sg list. The transfer size if fixed and sg length goes from a few up to 512. The purpose is to measure overhead caused by multiple sg elements. Signed-off-by: Per Forlin <per.forlin@linaro.org> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Venkatraman S <svenkatr@ti.com> Tested-by: Sourav Poddar <sourav.poddar@ti.com> Tested-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-07-20mmc: mmc_test: add test for non-blocking transfersPer Forlin
Add four tests for read and write performance per different transfer size, 4k to 4M. * Read using blocking mmc request * Read using non-blocking mmc request * Write using blocking mmc request * Write using non-blocking mmc request The host driver must support pre_req() and post_req() in order to run the non-blocking test cases. Signed-off-by: Per Forlin <per.forlin@linaro.org> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Venkatraman S <svenkatr@ti.com> Tested-by: Sourav Poddar<sourav.poddar@ti.com> Tested-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-07-20mmc: mmc_test: add debugfs file to list all testsPer Forlin
Add a debugfs file "testlist" to print all available tests. Signed-off-by: Per Forlin <per.forlin@linaro.org> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Venkatraman S <svenkatr@ti.com> Tested-by: Sourav Poddar<sourav.poddar@ti.com> Tested-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-07-20mmc: queue: let host controllers specify maximum discard timeoutAdrian Hunter
Some host controllers will not operate without a hardware timeout that is limited in value. However large discards require large timeouts, so there needs to be a way to specify the maximum discard size. A host controller driver may now specify the maximum discard timeout possible so that max_discard_sectors can be calculated. However, for eMMC when the High Capacity Erase Group Size is not in use, the timeout calculation depends on clock rate which may change. For that case Preferred Erase Size is used instead. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-07-20mmc: block: add checking of r/w command responseRussell King - ARM Linux
Check the status bits in the r/w command response for any errors. If error bits are set, then we won't have seen any data transferred, so it's pointless doing any further checking. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Linus Walleij <linus.walleij@linaro.org> Tested-by: Pawel Moll <pawel.moll@arm.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-07-20mmc: block: improve error recovery from command channel errorsRussell King - ARM Linux
Command channel errors fall into four classes: 1. The command was issued with the card in the wrong state 2. The command failed to be received by the card correctly 3. The cards response failed to be received by the host (CRC error) 4. The card failed to respond to the card For (1), in theory we should know that the card is in the correct state. However, a failed stop command (or other failure) may result in the card remaining in a data transfer state from the previous command. If we detect this condition, we try to recover by sending a stop command. For the initial commands (set block count and the read/write command) no data will have been transferred. All that we need deal with is retrying at this point. A failed stop command can be remedied as above. If we are unable to recover the card (eg, the card ignores our requests for status, or we don't recognise the error code) then we immediately fail the request. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Linus Walleij <linus.walleij@linaro.org> Tested-by: Pawel Moll <pawel.moll@arm.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-07-20mmc: block: allow get_card_status() to return error statusRussell King - ARM Linux
If the MMC_SEND_STATUS command is not successful, we should not return a zero status word, but instead allow the caller to know positively that an error occurred. Convert the open-coded get_card_status() to use the helper function, and provide definitions for the card state field. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Linus Walleij <linus.walleij@linaro.org> Tested-by: Pawel Moll <pawel.moll@arm.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-06-25mmc: queue: bring discard_granularity/alignment into line with SCSIAdrian Hunter
SCSI defines discard alignment as the offset to the first optimal discard. In the case of SD/MMC, that is always zero which is the default. SCSI defines discard granularity as a hint of a optimal discard size. That is much better expressed by the MMC "preferred erase size" (pref_erase) field. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-06-25mmc: queue: append partition subname to queue thread nameAdrian Hunter
For example, an eMMC with 2 boot partitions will have 3 threads. The names change from: 40 ? 00:00:00 mmcqd/0 41 ? 00:00:00 mmcqd/0 42 ? 00:00:00 mmcqd/0 to: 40 ? 00:00:00 mmcqd/0 41 ? 00:00:00 mmcqd/0boot0 42 ? 00:00:00 mmcqd/0boot1 Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andrei Warkentin <andreiw@motorola.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-06-25mmc: block: switch card to User Data Area when removing the block driverAdrian Hunter
The MMC block driver and other drivers (e.g. mmc-test) will expect the card to be switched to the User Data Area eMMC partition when they start. Hence the MMC block driver should ensure it is that way when it is removed. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andrei Warkentin <andreiw@motorola.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-05-25mmc: core: Block CMD23 support for UHS104/SDXC cards.Andrei Warkentin
SD cards operating at UHS104 or better support SET_BLOCK_COUNT. Signed-off-by: Andrei Warkentin <andreiw@motorola.com> Reviewed-by: Arindam Nath <arindam.nath@amd.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-05-25mmc: core: Use CMD23 for multiblock transfers when we can.Andrei Warkentin
CMD23-prefixed instead of open-ended multiblock transfers have a performance advantage on some MMC cards. Signed-off-by: Andrei Warkentin <andreiw@motorola.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-05-24mmc: mmc_test: minor clean up, use t = &test.area everywhereAndy Shevchenko
Signed-off-by: Andy Shevchenko <ext-andriy.shevchenko@nokia.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-05-24mmc: card: fix potential null dereference of 'idata'Vladimir Motyka
When allocation of idata failed there was a null dereference. Also avoid calling kfree where it isn't needed. Signed-off-by: Vladimir Motyka <vladimir.motyka@gmail.com> Signed-off-by: Chris Ball <cjb@laptop.org>
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-17 18:52:02 +0000