@@ -264,20 +264,6 @@ mmc_send_cxd_data(struct mmc_card *card, struct mmc_host *host,
struct mmc_command cmd = {0};
struct mmc_data data = {0};
struct scatterlist sg;
- void *data_buf;
- int is_on_stack;
-
- is_on_stack = object_is_on_stack(buf);
- if (is_on_stack) {
- /*
- * dma onto stack is unsafe/nonportable, but callers to this
- * routine normally provide temporary on-stack buffers ...
- */
- data_buf = kmalloc(len, GFP_KERNEL);
- if (!data_buf)
- return -ENOMEM;
- } else
- data_buf = buf;
mrq.cmd = &cmd;
mrq.data = &data;
@@ -298,7 +284,7 @@ mmc_send_cxd_data(struct mmc_card *card, struct mmc_host *host,
data.sg = &sg;
data.sg_len = 1;
- sg_init_one(&sg, data_buf, len);
+ sg_init_one(&sg, buf, len);
if (opcode == MMC_SEND_CSD || opcode == MMC_SEND_CID) {
/*
@@ -312,11 +298,6 @@ mmc_send_cxd_data(struct mmc_card *card, struct mmc_host *host,
mmc_wait_for_req(host, &mrq);
- if (is_on_stack) {
- memcpy(buf, data_buf, len);
- kfree(data_buf);
- }
-
if (cmd.error)
return cmd.error;
if (data.error)
Due to previous patches, all callers of mmc_send_cxd_data() now allocates their buffers from the heap. This enables us to simplify mmc_send_cxd_data() by removing the support of handling buffers, which are allocated from the stack. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> --- drivers/mmc/core/mmc_ops.c | 21 +-------------------- 1 file changed, 1 insertion(+), 20 deletions(-)