From 06c9ccb78e68e2e9b69e736fc0a39fb13be49b74 Mon Sep 17 00:00:00 2001 From: "Winkler, Tomas" Date: Sun, 2 Apr 2017 23:56:03 +0300 Subject: [PATCH] mmc: core: add proper be32 annotation Annotate big endian values correctly and make sparse happy. In mmc_app_send_scr remove scr function parameter as it was updating card->raw_scr anyway. Signed-off-by: Tomas Winkler Signed-off-by: Ulf Hansson --- drivers/mmc/core/mmc_ops.c | 8 ++++---- drivers/mmc/core/sd.c | 4 ++-- drivers/mmc/core/sd_ops.c | 19 +++++++++---------- drivers/mmc/core/sd_ops.h | 2 +- 4 files changed, 16 insertions(+), 17 deletions(-) diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c index 24c58d24c19a..78f75f00efc5 100644 --- a/drivers/mmc/core/mmc_ops.c +++ b/drivers/mmc/core/mmc_ops.c @@ -305,7 +305,7 @@ mmc_send_cxd_data(struct mmc_card *card, struct mmc_host *host, int mmc_send_csd(struct mmc_card *card, u32 *csd) { int ret, i; - u32 *csd_tmp; + __be32 *csd_tmp; if (!mmc_host_is_spi(card->host)) return mmc_send_cxd_native(card->host, card->rca << 16, @@ -319,7 +319,7 @@ int mmc_send_csd(struct mmc_card *card, u32 *csd) if (ret) goto err; - for (i = 0;i < 4;i++) + for (i = 0; i < 4; i++) csd[i] = be32_to_cpu(csd_tmp[i]); err: @@ -330,7 +330,7 @@ err: int mmc_send_cid(struct mmc_host *host, u32 *cid) { int ret, i; - u32 *cid_tmp; + __be32 *cid_tmp; if (!mmc_host_is_spi(host)) { if (!host->card) @@ -347,7 +347,7 @@ int mmc_send_cid(struct mmc_host *host, u32 *cid) if (ret) goto err; - for (i = 0;i < 4;i++) + for (i = 0; i < 4; i++) cid[i] = be32_to_cpu(cid_tmp[i]); err: diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c index 89531b48ae84..d109634fbfce 100644 --- a/drivers/mmc/core/sd.c +++ b/drivers/mmc/core/sd.c @@ -225,7 +225,7 @@ static int mmc_decode_scr(struct mmc_card *card) static int mmc_read_ssr(struct mmc_card *card) { unsigned int au, es, et, eo; - u32 *raw_ssr; + __be32 *raw_ssr; int i; if (!(card->csd.cmdclass & CCC_APP_SPEC)) { @@ -853,7 +853,7 @@ int mmc_sd_setup_card(struct mmc_host *host, struct mmc_card *card, /* * Fetch SCR from card. */ - err = mmc_app_send_scr(card, card->raw_scr); + err = mmc_app_send_scr(card); if (err) return err; diff --git a/drivers/mmc/core/sd_ops.c b/drivers/mmc/core/sd_ops.c index 9d5824a37586..47056d8d1bac 100644 --- a/drivers/mmc/core/sd_ops.c +++ b/drivers/mmc/core/sd_ops.c @@ -232,14 +232,14 @@ int mmc_send_relative_addr(struct mmc_host *host, unsigned int *rca) return 0; } -int mmc_app_send_scr(struct mmc_card *card, u32 *scr) +int mmc_app_send_scr(struct mmc_card *card) { int err; struct mmc_request mrq = {}; struct mmc_command cmd = {}; struct mmc_data data = {}; struct scatterlist sg; - void *data_buf; + __be32 *scr; /* NOTE: caller guarantees scr is heap-allocated */ @@ -250,8 +250,8 @@ int mmc_app_send_scr(struct mmc_card *card, u32 *scr) /* dma onto stack is unsafe/nonportable, but callers to this * routine normally provide temporary on-stack buffers ... */ - data_buf = kmalloc(sizeof(card->raw_scr), GFP_KERNEL); - if (data_buf == NULL) + scr = kmalloc(sizeof(card->raw_scr), GFP_KERNEL); + if (!scr) return -ENOMEM; mrq.cmd = &cmd; @@ -267,23 +267,22 @@ int mmc_app_send_scr(struct mmc_card *card, u32 *scr) data.sg = &sg; data.sg_len = 1; - sg_init_one(&sg, data_buf, 8); + sg_init_one(&sg, scr, 8); mmc_set_data_timeout(&data, card); mmc_wait_for_req(card->host, &mrq); - memcpy(scr, data_buf, sizeof(card->raw_scr)); - kfree(data_buf); + card->raw_scr[0] = be32_to_cpu(scr[0]); + card->raw_scr[1] = be32_to_cpu(scr[1]); + + kfree(scr); if (cmd.error) return cmd.error; if (data.error) return data.error; - scr[0] = be32_to_cpu(scr[0]); - scr[1] = be32_to_cpu(scr[1]); - return 0; } diff --git a/drivers/mmc/core/sd_ops.h b/drivers/mmc/core/sd_ops.h index 784f8e6b6baa..0e6c3d51e66d 100644 --- a/drivers/mmc/core/sd_ops.h +++ b/drivers/mmc/core/sd_ops.h @@ -22,7 +22,7 @@ int mmc_app_set_bus_width(struct mmc_card *card, int width); int mmc_send_app_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr); int mmc_send_if_cond(struct mmc_host *host, u32 ocr); int mmc_send_relative_addr(struct mmc_host *host, unsigned int *rca); -int mmc_app_send_scr(struct mmc_card *card, u32 *scr); +int mmc_app_send_scr(struct mmc_card *card); int mmc_sd_switch(struct mmc_card *card, int mode, int group, u8 value, u8 *resp); int mmc_app_sd_status(struct mmc_card *card, void *ssr); -- 2.39.2