From 24f5b53ba076e983bc64fa48534ca795d7813d51 Mon Sep 17 00:00:00 2001 From: Chris Ball Date: Wed, 13 Apr 2011 23:49:45 -0400 Subject: [PATCH] mmc: initialize struct mmc_request at declaration time Converts from: struct mmc_request mrq; memset(&mrq, 0, sizeof(struct mmc_request)); to: struct mmc_request mrq = {0}; because it's shorter, as performant, and easier to work out whether initialization has happened. Signed-off-by: Chris Ball --- drivers/mmc/card/block.c | 4 +--- drivers/mmc/card/mmc_test.c | 12 +++--------- drivers/mmc/core/core.c | 4 +--- drivers/mmc/core/mmc_ops.c | 8 ++------ drivers/mmc/core/sd_ops.c | 14 ++++---------- drivers/mmc/core/sdio_ops.c | 4 +--- 6 files changed, 12 insertions(+), 34 deletions(-) diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c index fb387c803205..adf0ed3f2c08 100644 --- a/drivers/mmc/card/block.c +++ b/drivers/mmc/card/block.c @@ -259,7 +259,7 @@ static u32 mmc_sd_num_wr_blocks(struct mmc_card *card) u32 result; __be32 *blocks; - struct mmc_request mrq; + struct mmc_request mrq = {0}; struct mmc_command cmd = {0}; struct mmc_data data = {0}; unsigned int timeout_us; @@ -300,8 +300,6 @@ static u32 mmc_sd_num_wr_blocks(struct mmc_card *card) data.sg = &sg; data.sg_len = 1; - memset(&mrq, 0, sizeof(struct mmc_request)); - mrq.cmd = &cmd; mrq.data = &data; diff --git a/drivers/mmc/card/mmc_test.c b/drivers/mmc/card/mmc_test.c index f44762b6e592..35252c1e7a20 100644 --- a/drivers/mmc/card/mmc_test.c +++ b/drivers/mmc/card/mmc_test.c @@ -246,15 +246,13 @@ static int mmc_test_buffer_transfer(struct mmc_test_card *test, { int ret; - struct mmc_request mrq; + struct mmc_request mrq = {0}; struct mmc_command cmd = {0}; struct mmc_command stop = {0}; struct mmc_data data = {0}; struct scatterlist sg; - memset(&mrq, 0, sizeof(struct mmc_request)); - mrq.cmd = &cmd; mrq.data = &data; mrq.stop = &stop; @@ -728,13 +726,11 @@ static int mmc_test_simple_transfer(struct mmc_test_card *test, struct scatterlist *sg, unsigned sg_len, unsigned dev_addr, unsigned blocks, unsigned blksz, int write) { - struct mmc_request mrq; + struct mmc_request mrq = {0}; struct mmc_command cmd = {0}; struct mmc_command stop = {0}; struct mmc_data data = {0}; - memset(&mrq, 0, sizeof(struct mmc_request)); - mrq.cmd = &cmd; mrq.data = &data; mrq.stop = &stop; @@ -755,15 +751,13 @@ static int mmc_test_simple_transfer(struct mmc_test_card *test, static int mmc_test_broken_transfer(struct mmc_test_card *test, unsigned blocks, unsigned blksz, int write) { - struct mmc_request mrq; + struct mmc_request mrq = {0}; struct mmc_command cmd = {0}; struct mmc_command stop = {0}; struct mmc_data data = {0}; struct scatterlist sg; - memset(&mrq, 0, sizeof(struct mmc_request)); - mrq.cmd = &cmd; mrq.data = &data; mrq.stop = &stop; diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index f273ffd6557a..1dbc18576219 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -236,12 +236,10 @@ EXPORT_SYMBOL(mmc_wait_for_req); */ int mmc_wait_for_cmd(struct mmc_host *host, struct mmc_command *cmd, int retries) { - struct mmc_request mrq; + struct mmc_request mrq = {0}; WARN_ON(!host->claimed); - memset(&mrq, 0, sizeof(struct mmc_request)); - memset(cmd->resp, 0, sizeof(cmd->resp)); cmd->retries = retries; diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c index 1ed3866e990f..845ce7c533b9 100644 --- a/drivers/mmc/core/mmc_ops.c +++ b/drivers/mmc/core/mmc_ops.c @@ -233,7 +233,7 @@ static int mmc_send_cxd_data(struct mmc_card *card, struct mmc_host *host, u32 opcode, void *buf, unsigned len) { - struct mmc_request mrq; + struct mmc_request mrq = {0}; struct mmc_command cmd = {0}; struct mmc_data data = {0}; struct scatterlist sg; @@ -246,8 +246,6 @@ mmc_send_cxd_data(struct mmc_card *card, struct mmc_host *host, if (data_buf == NULL) return -ENOMEM; - memset(&mrq, 0, sizeof(struct mmc_request)); - mrq.cmd = &cmd; mrq.data = &data; @@ -456,7 +454,7 @@ static int mmc_send_bus_test(struct mmc_card *card, struct mmc_host *host, u8 opcode, u8 len) { - struct mmc_request mrq; + struct mmc_request mrq = {0}; struct mmc_command cmd = {0}; struct mmc_data data = {0}; struct scatterlist sg; @@ -487,8 +485,6 @@ mmc_send_bus_test(struct mmc_card *card, struct mmc_host *host, u8 opcode, if (opcode == MMC_BUS_TEST_W) memcpy(data_buf, test_buf, len); - memset(&mrq, 0, sizeof(struct mmc_request)); - mrq.cmd = &cmd; mrq.data = &data; cmd.opcode = opcode; diff --git a/drivers/mmc/core/sd_ops.c b/drivers/mmc/core/sd_ops.c index 8023f580b901..a206aea5360d 100644 --- a/drivers/mmc/core/sd_ops.c +++ b/drivers/mmc/core/sd_ops.c @@ -66,7 +66,7 @@ static int mmc_app_cmd(struct mmc_host *host, struct mmc_card *card) int mmc_wait_for_app_cmd(struct mmc_host *host, struct mmc_card *card, struct mmc_command *cmd, int retries) { - struct mmc_request mrq; + struct mmc_request mrq = {0}; int i, err; @@ -243,7 +243,7 @@ int mmc_send_relative_addr(struct mmc_host *host, unsigned int *rca) int mmc_app_send_scr(struct mmc_card *card, u32 *scr) { int err; - struct mmc_request mrq; + struct mmc_request mrq = {0}; struct mmc_command cmd = {0}; struct mmc_data data = {0}; struct scatterlist sg; @@ -266,8 +266,6 @@ int mmc_app_send_scr(struct mmc_card *card, u32 *scr) if (data_buf == NULL) return -ENOMEM; - memset(&mrq, 0, sizeof(struct mmc_request)); - mrq.cmd = &cmd; mrq.data = &data; @@ -304,7 +302,7 @@ int mmc_app_send_scr(struct mmc_card *card, u32 *scr) int mmc_sd_switch(struct mmc_card *card, int mode, int group, u8 value, u8 *resp) { - struct mmc_request mrq; + struct mmc_request mrq = {0}; struct mmc_command cmd = {0}; struct mmc_data data = {0}; struct scatterlist sg; @@ -317,8 +315,6 @@ int mmc_sd_switch(struct mmc_card *card, int mode, int group, mode = !!mode; value &= 0xF; - memset(&mrq, 0, sizeof(struct mmc_request)); - mrq.cmd = &cmd; mrq.data = &data; @@ -351,7 +347,7 @@ int mmc_sd_switch(struct mmc_card *card, int mode, int group, int mmc_app_sd_status(struct mmc_card *card, void *ssr) { int err; - struct mmc_request mrq; + struct mmc_request mrq = {0}; struct mmc_command cmd = {0}; struct mmc_data data = {0}; struct scatterlist sg; @@ -366,8 +362,6 @@ int mmc_app_sd_status(struct mmc_card *card, void *ssr) if (err) return err; - memset(&mrq, 0, sizeof(struct mmc_request)); - mrq.cmd = &cmd; mrq.data = &data; diff --git a/drivers/mmc/core/sdio_ops.c b/drivers/mmc/core/sdio_ops.c index 147dfc1879b3..f087d876c573 100644 --- a/drivers/mmc/core/sdio_ops.c +++ b/drivers/mmc/core/sdio_ops.c @@ -121,7 +121,7 @@ int mmc_io_rw_direct(struct mmc_card *card, int write, unsigned fn, int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn, unsigned addr, int incr_addr, u8 *buf, unsigned blocks, unsigned blksz) { - struct mmc_request mrq; + struct mmc_request mrq = {0}; struct mmc_command cmd = {0}; struct mmc_data data = {0}; struct scatterlist sg; @@ -136,8 +136,6 @@ int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn, if (addr & ~0x1FFFF) return -EINVAL; - memset(&mrq, 0, sizeof(struct mmc_request)); - mrq.cmd = &cmd; mrq.data = &data;