mmc: don't use malloc_cache_aligned()

Not using this function reduces the size of the binary. It's replaces by
a standard malloc() and the alignment requirement is handled by an
intermediate buffer on the stack.

Also make sure that the allocated buffer is freed in case of error.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>

diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index 2a58031c198421725a1be32f32bd024a4fefd24e..13979a5e81f8bbec90f105b32c31a2017f12d891 100644 (file)
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -1867,21 +1867,23 @@ static int mmc_startup_v4(struct mmc *mmc)
        u64 capacity;
        bool has_parts = false;
        bool part_completed;
-       u8 *ext_csd;
+       ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN);
 
        if (IS_SD(mmc) || (mmc->version < MMC_VERSION_4))
                return 0;
 
-       ext_csd = malloc_cache_aligned(MMC_MAX_BLOCK_LEN);
-       if (!ext_csd)
-               return -ENOMEM;
-
-       mmc->ext_csd = ext_csd;
-
        /* check  ext_csd version and capacity */
        err = mmc_send_ext_csd(mmc, ext_csd);
        if (err)
-               return err;
+               goto error;
+
+       /* store the ext csd for future reference */
+       if (!mmc->ext_csd)
+               mmc->ext_csd = malloc(MMC_MAX_BLOCK_LEN);
+       if (!mmc->ext_csd)
+               return -ENOMEM;
+       memcpy(mmc->ext_csd, ext_csd, MMC_MAX_BLOCK_LEN);
+
        if (ext_csd[EXT_CSD_REV] >= 2) {
                /*
                 * According to the JEDEC Standard, the value of
@@ -1990,7 +1992,7 @@ static int mmc_startup_v4(struct mmc *mmc)
                                 EXT_CSD_ERASE_GROUP_DEF, 1);
 
                if (err)
-                       return err;
+                       goto error;
 
                ext_csd[EXT_CSD_ERASE_GROUP_DEF] = 1;
        }
@@ -2029,6 +2031,12 @@ static int mmc_startup_v4(struct mmc *mmc)
        mmc->wr_rel_set = ext_csd[EXT_CSD_WR_REL_SET];
 
        return 0;
+error:
+       if (mmc->ext_csd) {
+               free(mmc->ext_csd);
+               mmc->ext_csd = NULL;
+       }
+       return err;
 }
 
 static int mmc_startup(struct mmc *mmc)