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IB/iser: Fix possible bogus DMA unmapping

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If iser_initialize_task_headers() routine failed before
dma mapping, we should not attempt to unmap in cleanup_task().

Fixes: 7414dde0a6 (IB/iser: Fix race between iser connection ...)
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Sagi Grimberg
2015-08-06 18:32:50 +03:00
committed by Doug Ledford
parent 02816a8b88
commit 8d5944d803
2 changed files with 10 additions and 4 deletions
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2
drivers/infiniband/ulp/iser/iscsi_iser.h
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@@ -270,6 +270,7 @@ enum iser_desc_type {
* sg[1] optionally points to either of immediate data
* unsolicited data-out or control
* @num_sge: number sges used on this TX task
* @mapped: Is the task header mapped
*/
struct iser_tx_desc {
struct iser_hdr iser_header;
@@ -278,6 +279,7 @@ struct iser_tx_desc {
u64 dma_addr;
struct ib_sge tx_sg[2];
int num_sge;
bool mapped;
};
#define ISER_RX_PAD_SIZE (256 - (ISER_RX_PAYLOAD_SIZE + \