3.15-stable review patch. If anyone has any objections, please let me know.
------------------ From: Steve Wise <[email protected]> commit 6b54d54dea82ae214e4a45a503c4ef755a8ecee8 upstream. The status page is mapped to user processes and allows sharing the device state between the kernel and user processes. This state isn't getting initialized and thus intermittently causes problems. Namely, the user process can mistakenly think the user doorbell writes are disabled which causes SQ work requests to never get fetched by HW. Fixes: 05eb23893c2c ("cxgb4/iw_cxgb4: Doorbell Drop Avoidance Bug Fixes"). Signed-off-by: Steve Wise <[email protected]> Signed-off-by: Roland Dreier <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/infiniband/hw/cxgb4/device.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/infiniband/hw/cxgb4/device.c +++ b/drivers/infiniband/hw/cxgb4/device.c @@ -654,6 +654,7 @@ static int c4iw_rdev_open(struct c4iw_rd pr_err(MOD "error allocating status page\n"); goto err4; } + rdev->status_page->db_off = 0; return 0; err4: c4iw_rqtpool_destroy(rdev); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
