diff options
| -rw-r--r-- | drivers/usb/storage/scsiglue.c | 12 | ||||
| -rw-r--r-- | drivers/usb/storage/unusual_devs.h | 7 | ||||
| -rw-r--r-- | include/linux/usb_usual.h | 5 |
3 files changed, 20 insertions, 4 deletions
diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/storage/scsiglue.c index 836a34ae6ec6..7c9593b7b04e 100644 --- a/drivers/usb/storage/scsiglue.c +++ b/drivers/usb/storage/scsiglue.c @@ -114,9 +114,15 @@ static int slave_configure(struct scsi_device *sdev) * while others have trouble with more than 64K. At this time we * are limiting both to 32K (64 sectores). */ - if ((us->flags & US_FL_MAX_SECTORS_64) && - sdev->request_queue->max_sectors > 64) - blk_queue_max_sectors(sdev->request_queue, 64); + if (us->flags & (US_FL_MAX_SECTORS_64 | US_FL_MAX_SECTORS_MIN)) { + unsigned int max_sectors = 64; + + if (us->flags & US_FL_MAX_SECTORS_MIN) + max_sectors = PAGE_CACHE_SIZE >> 9; + if (sdev->request_queue->max_sectors > max_sectors) + blk_queue_max_sectors(sdev->request_queue, + max_sectors); + } /* We can't put these settings in slave_alloc() because that gets * called before the device type is known. Consequently these diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h index 2c27721bd259..7bbfd31a9645 100644 --- a/drivers/usb/storage/unusual_devs.h +++ b/drivers/usb/storage/unusual_devs.h @@ -376,6 +376,13 @@ UNUSUAL_DEV( 0x04b0, 0x0417, 0x0100, 0x0100, US_SC_DEVICE, US_PR_DEVICE, NULL, US_FL_FIX_CAPACITY), +/* Reported by Doug Maxey (dwm@austin.ibm.com) */ +UNUSUAL_DEV( 0x04b3, 0x4001, 0x0110, 0x0110, + "IBM", + "IBM RSA2", + US_SC_DEVICE, US_PR_CB, NULL, + US_FL_MAX_SECTORS_MIN), + /* BENQ DC5330 * Reported by Manuel Fombuena <mfombuena@ya.com> and * Frank Copeland <fjc@thingy.apana.org.au> */ diff --git a/include/linux/usb_usual.h b/include/linux/usb_usual.h index 1b792b9286ba..a417b09b8b3d 100644 --- a/include/linux/usb_usual.h +++ b/include/linux/usb_usual.h @@ -48,7 +48,10 @@ US_FLAG(IGNORE_DEVICE, 0x00000800) \ /* Don't claim device */ \ US_FLAG(CAPACITY_HEURISTICS, 0x00001000) \ - /* sometimes sizes is too big */ + /* sometimes sizes is too big */ \ + US_FLAG(MAX_SECTORS_MIN,0x00002000) \ + /* Sets max_sectors to arch min */ + #define US_FLAG(name, value) US_FL_##name = value , enum { US_DO_ALL_FLAGS }; |