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 <cjb@laptop.org>

diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index fb387c8032054fcaac7a7930e96fc2f456d75685..adf0ed3f2c0875bc46654ba2bf307fb6edbc2c40 100644 (file)
--- 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 f44762b6e592919b76fdc957d833a07aca172cd4..35252c1e7a202b84d410e1c3b0ded50b922d1fd0 100644 (file)
--- 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 f273ffd6557a8bc363ba7f07dd121f8fc2a9b0b6..1dbc185762196c296614768e9cea02776eeaaca2 100644 (file)
--- 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 1ed3866e990f4807029c66bf93d60243722f496e..845ce7c533b901b0895a6bf4c5715c676c5cd902 100644 (file)
--- 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 8023f580b9013b664d9f888002c5566f086baf1d..a206aea5360df75154fe9872a877eeb3290f6a34 100644 (file)
--- 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 147dfc1879b318782bb46b739f6b736bfffe2a58..f087d876c5731ebb0feefe14244811936ddefa70 100644 (file)
--- 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;