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authorMasahiro Yamada <yamada.masahiro@socionext.com>2016-12-19 20:51:18 +0900
committerUlf Hansson <ulf.hansson@linaro.org>2017-02-13 13:19:54 +0100
commitc7836d1593b87cb813c58cf64e08b052ebbe2a78 (patch)
treee3eb7869a2b2cee2eecca2157213c896184b7630 /drivers/mmc/core/core.c
parent164b50b353908c79b551b3658e37f29182e2c0b3 (diff)
mmc: use empty initializer list to zero-clear structures
In the MMC subsystem, we see such initializers that only clears the first member explicitly. For example, struct mmc_request mrq = {NULL}; sets the first member (.sbc) to NULL explicitly. However, this is an unstable form because we may insert a non-pointer member at the top of the struct mmc_request in the future. (if we do so, the compiler will spit warnings.) So, using a designated initializer is preferred coding style. The expression above is equivalent to: struct mmc_request mrq = { .sbc = NULL }; Of course, this does not express our intention. We want to fill all struct members with zeros. Please note struct members are implicitly zero-cleared unless otherwise specified in the initializer. After all, the most reasonable (and stable) form is: struct mmc_request mrq = {}; Do likewise for mmc_command, mmc_data as well. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/core/core.c')
-rw-r--r--drivers/mmc/core/core.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 1076b9d89df3..3b34a751eea1 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -807,7 +807,7 @@ EXPORT_SYMBOL(mmc_interrupt_hpi);
*/
int mmc_wait_for_cmd(struct mmc_host *host, struct mmc_command *cmd, int retries)
{
- struct mmc_request mrq = {NULL};
+ struct mmc_request mrq = {};
WARN_ON(!host->claimed);
@@ -1648,7 +1648,7 @@ int __mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage)
int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage, u32 ocr)
{
- struct mmc_command cmd = {0};
+ struct mmc_command cmd = {};
int err = 0;
u32 clock;
@@ -2129,7 +2129,7 @@ static unsigned int mmc_erase_timeout(struct mmc_card *card,
static int mmc_do_erase(struct mmc_card *card, unsigned int from,
unsigned int to, unsigned int arg)
{
- struct mmc_command cmd = {0};
+ struct mmc_command cmd = {};
unsigned int qty = 0, busy_timeout = 0;
bool use_r1b_resp = false;
unsigned long timeout;
@@ -2551,7 +2551,7 @@ EXPORT_SYMBOL(mmc_calc_max_discard);
int mmc_set_blocklen(struct mmc_card *card, unsigned int blocklen)
{
- struct mmc_command cmd = {0};
+ struct mmc_command cmd = {};
if (mmc_card_blockaddr(card) || mmc_card_ddr52(card) ||
mmc_card_hs400(card) || mmc_card_hs400es(card))
@@ -2567,7 +2567,7 @@ EXPORT_SYMBOL(mmc_set_blocklen);
int mmc_set_blockcount(struct mmc_card *card, unsigned int blockcount,
bool is_rel_write)
{
- struct mmc_command cmd = {0};
+ struct mmc_command cmd = {};
cmd.opcode = MMC_SET_BLOCK_COUNT;
cmd.arg = blockcount & 0x0000FFFF;