* [PATCH 3/3] mmc: initialize struct mmc_request 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_request mrq;
memset(&mrq, 0, sizeof(struct mmc_request));
to:
struct mmc_command mrq = {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 | 6 ++----
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, 13 insertions(+), 35 deletions(-)
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index fb387c8..fe551c0 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;
@@ -482,7 +480,7 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *req)
{
struct mmc_blk_data *md = mq->data;
struct mmc_card *card = md->queue.card;
- struct mmc_blk_request brq;
+ struct mmc_blk_request brq = {0};
int ret = 1, disable_multi = 0;
/*
diff --git a/drivers/mmc/card/mmc_test.c b/drivers/mmc/card/mmc_test.c
index d2eb5b1..a65ea90 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 f273ffd..1dbc185 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 6156c79..c20aaa3 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 8023f58..a206aea 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 147dfc1..f087d87 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;
--
1.7.0.1
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