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ath6kl: fix busreqs so they can be reused when sg is cleaned up

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To reuse the busreqs in case of hardware restart, they must be
properly reinitialized.  If the scat_req pointer isn't reset to
0, __ath6kl_sdio_write_async() will assume there is sg work to be
done (causing a kernel OOPS).

Signed-off-by: James Minor <james.minor@ni.com>
Reviewed-by: Steve deRosier <steve.derosier@lairdtech.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
James Minor 2016-10-03 13:00:02 -05:00 committed by Kalle Valo
parent ebee76f7fa
commit 3605d751d5
1 changed files with 3 additions and 1 deletions
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4
drivers/net/wireless/ath/ath6kl/sdio.c
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@ -703,8 +703,10 @@ static void ath6kl_sdio_cleanup_scatter(struct ath6kl *ar)
* ath6kl_hif_rw_comp_handler() with status -ECANCELED so
* that the packet is properly freed?
*/
if (s_req->busrequest)
if (s_req->busrequest) {
s_req->busrequest->scat_req = 0;
ath6kl_sdio_free_bus_req(ar_sdio, s_req->busrequest);
}
kfree(s_req->virt_dma_buf);
kfree(s_req->sgentries);
kfree(s_req);