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Subject[PATCH net 1/2] net: ipa: set DMA length in gsi_trans_cmd_add()
Date
When a command gets added to a transaction for the AP->command
channel we set the DMA address of its scatterlist entry, but not
its DMA length. Fix this bug.

Signed-off-by: Alex Elder <elder@linaro.org>
---
drivers/net/ipa/gsi_trans.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ipa/gsi_trans.c b/drivers/net/ipa/gsi_trans.c
index 2fd21d75367d..bdbfeed359db 100644
--- a/drivers/net/ipa/gsi_trans.c
+++ b/drivers/net/ipa/gsi_trans.c
@@ -399,13 +399,14 @@ void gsi_trans_cmd_add(struct gsi_trans *trans, void *buf, u32 size,
/* assert(which < trans->tre_count); */

/* Set the page information for the buffer. We also need to fill in
- * the DMA address for the buffer (something dma_map_sg() normally
- * does).
+ * the DMA address and length for the buffer (something dma_map_sg()
+ * normally does).
*/
sg = &trans->sgl[which];

sg_set_buf(sg, buf, size);
sg_dma_address(sg) = addr;
+ sg_dma_len(sg) = sg->length;

info = &trans->info[which];
info->opcode = opcode;
--
2.20.1
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