* [PATCH 2/3] mmc: initialize struct mmc_data at declaration time
@ 2011-04-14 3:57 Chris Ball
0 siblings, 0 replies; only message in thread
From: Chris Ball @ 2011-04-14 3:57 UTC (permalink / raw)
To: linux-mmc; +Cc: Chris Ball
Converts from:
struct mmc_data data;
memset(&data, 0, sizeof(struct mmc_data));
to:
struct mmc_data data = {0};
because it's shorter, as performant, and easier to work out whether
initialization has happened.
Signed-off-by: Chris Ball <cjb@laptop.org>
---
drivers/mmc/card/block.c | 4 +---
drivers/mmc/card/mmc_test.c | 9 +++------
drivers/mmc/core/mmc_ops.c | 6 ++----
drivers/mmc/core/sd_ops.c | 9 +++------
drivers/mmc/core/sdio_ops.c | 3 +--
5 files changed, 10 insertions(+), 21 deletions(-)
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index 93a7efc..fb387c8 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -261,7 +261,7 @@ static u32 mmc_sd_num_wr_blocks(struct mmc_card *card)
struct mmc_request mrq;
struct mmc_command cmd = {0};
- struct mmc_data data;
+ struct mmc_data data = {0};
unsigned int timeout_us;
struct scatterlist sg;
@@ -282,8 +282,6 @@ static u32 mmc_sd_num_wr_blocks(struct mmc_card *card)
cmd.arg = 0;
cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC;
- memset(&data, 0, sizeof(struct mmc_data));
-
data.timeout_ns = card->csd.tacc_ns * 100;
data.timeout_clks = card->csd.tacc_clks * 100;
diff --git a/drivers/mmc/card/mmc_test.c b/drivers/mmc/card/mmc_test.c
index cc09be8..d2eb5b1 100644
--- a/drivers/mmc/card/mmc_test.c
+++ b/drivers/mmc/card/mmc_test.c
@@ -249,12 +249,11 @@ static int mmc_test_buffer_transfer(struct mmc_test_card *test,
struct mmc_request mrq;
struct mmc_command cmd = {0};
struct mmc_command stop = {0};
- struct mmc_data data;
+ struct mmc_data data = {0};
struct scatterlist sg;
memset(&mrq, 0, sizeof(struct mmc_request));
- memset(&data, 0, sizeof(struct mmc_data));
mrq.cmd = &cmd;
mrq.data = &data;
@@ -732,10 +731,9 @@ static int mmc_test_simple_transfer(struct mmc_test_card *test,
struct mmc_request mrq;
struct mmc_command cmd = {0};
struct mmc_command stop = {0};
- struct mmc_data data;
+ struct mmc_data data = {0};
memset(&mrq, 0, sizeof(struct mmc_request));
- memset(&data, 0, sizeof(struct mmc_data));
mrq.cmd = &cmd;
mrq.data = &data;
@@ -760,12 +758,11 @@ static int mmc_test_broken_transfer(struct mmc_test_card *test,
struct mmc_request mrq;
struct mmc_command cmd = {0};
struct mmc_command stop = {0};
- struct mmc_data data;
+ struct mmc_data data = {0};
struct scatterlist sg;
memset(&mrq, 0, sizeof(struct mmc_request));
- memset(&data, 0, sizeof(struct mmc_data));
mrq.cmd = &cmd;
mrq.data = &data;
diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c
index 3631ed6..6156c79 100644
--- a/drivers/mmc/core/mmc_ops.c
+++ b/drivers/mmc/core/mmc_ops.c
@@ -235,7 +235,7 @@ mmc_send_cxd_data(struct mmc_card *card, struct mmc_host *host,
{
struct mmc_request mrq;
struct mmc_command cmd = {0};
- struct mmc_data data;
+ struct mmc_data data = {0};
struct scatterlist sg;
void *data_buf;
@@ -247,7 +247,6 @@ mmc_send_cxd_data(struct mmc_card *card, struct mmc_host *host,
return -ENOMEM;
memset(&mrq, 0, sizeof(struct mmc_request));
- memset(&data, 0, sizeof(struct mmc_data));
mrq.cmd = &cmd;
mrq.data = &data;
@@ -459,7 +458,7 @@ mmc_send_bus_test(struct mmc_card *card, struct mmc_host *host, u8 opcode,
{
struct mmc_request mrq;
struct mmc_command cmd = {0};
- struct mmc_data data;
+ struct mmc_data data = {0};
struct scatterlist sg;
u8 *data_buf;
u8 *test_buf;
@@ -489,7 +488,6 @@ mmc_send_bus_test(struct mmc_card *card, struct mmc_host *host, u8 opcode,
memcpy(data_buf, test_buf, len);
memset(&mrq, 0, sizeof(struct mmc_request));
- memset(&data, 0, sizeof(struct mmc_data));
mrq.cmd = &cmd;
mrq.data = &data;
diff --git a/drivers/mmc/core/sd_ops.c b/drivers/mmc/core/sd_ops.c
index dfe9a9c..8023f58 100644
--- a/drivers/mmc/core/sd_ops.c
+++ b/drivers/mmc/core/sd_ops.c
@@ -245,7 +245,7 @@ int mmc_app_send_scr(struct mmc_card *card, u32 *scr)
int err;
struct mmc_request mrq;
struct mmc_command cmd = {0};
- struct mmc_data data;
+ struct mmc_data data = {0};
struct scatterlist sg;
void *data_buf;
@@ -267,7 +267,6 @@ int mmc_app_send_scr(struct mmc_card *card, u32 *scr)
return -ENOMEM;
memset(&mrq, 0, sizeof(struct mmc_request));
- memset(&data, 0, sizeof(struct mmc_data));
mrq.cmd = &cmd;
mrq.data = &data;
@@ -307,7 +306,7 @@ int mmc_sd_switch(struct mmc_card *card, int mode, int group,
{
struct mmc_request mrq;
struct mmc_command cmd = {0};
- struct mmc_data data;
+ struct mmc_data data = {0};
struct scatterlist sg;
BUG_ON(!card);
@@ -319,7 +318,6 @@ int mmc_sd_switch(struct mmc_card *card, int mode, int group,
value &= 0xF;
memset(&mrq, 0, sizeof(struct mmc_request));
- memset(&data, 0, sizeof(struct mmc_data));
mrq.cmd = &cmd;
mrq.data = &data;
@@ -355,7 +353,7 @@ int mmc_app_sd_status(struct mmc_card *card, void *ssr)
int err;
struct mmc_request mrq;
struct mmc_command cmd = {0};
- struct mmc_data data;
+ struct mmc_data data = {0};
struct scatterlist sg;
BUG_ON(!card);
@@ -369,7 +367,6 @@ int mmc_app_sd_status(struct mmc_card *card, void *ssr)
return err;
memset(&mrq, 0, sizeof(struct mmc_request));
- memset(&data, 0, sizeof(struct mmc_data));
mrq.cmd = &cmd;
mrq.data = &data;
diff --git a/drivers/mmc/core/sdio_ops.c b/drivers/mmc/core/sdio_ops.c
index f77b1bc..147dfc1 100644
--- a/drivers/mmc/core/sdio_ops.c
+++ b/drivers/mmc/core/sdio_ops.c
@@ -123,7 +123,7 @@ int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn,
{
struct mmc_request mrq;
struct mmc_command cmd = {0};
- struct mmc_data data;
+ struct mmc_data data = {0};
struct scatterlist sg;
BUG_ON(!card);
@@ -137,7 +137,6 @@ int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn,
return -EINVAL;
memset(&mrq, 0, sizeof(struct mmc_request));
- memset(&data, 0, sizeof(struct mmc_data));
mrq.cmd = &cmd;
mrq.data = &data;
--
1.7.0.1
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2011-04-14 3:57 [PATCH 2/3] mmc: initialize struct mmc_data at declaration time Chris Ball
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