This is a note to let you know that I've just added the patch titled Crypto: chelsio - Fixes a hang issue during driver registration to the 5.6-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: crypto-chelsio-fixes-a-hang-issue-during-driver-regi.patch and it can be found in the queue-5.6 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 76390dbc4b57a1529c6cd41157efeb622ed16be5 Author: Ayush Sawal <ayush.sawal@xxxxxxxxxxx> Date: Mon Mar 30 20:48:52 2020 +0530 Crypto: chelsio - Fixes a hang issue during driver registration commit ad59ddd02de26271b89564962e74d689f1a30b49 upstream. This issue occurs only when multiadapters are present. Hang happens because assign_chcr_device returns u_ctx pointer of adapter which is not yet initialized as for this adapter cxgb_up is not been called yet. The last_dev pointer is used to determine u_ctx pointer and it is initialized two times in chcr_uld_add in chcr_dev_add respectively. The fix here is don't initialize the last_dev pointer during chcr_uld_add. Only assign to value to it when the adapter's initialization is completed i.e in chcr_dev_add. Fixes: fef4912b66d62 ("crypto: chelsio - Handle PCI shutdown event"). Signed-off-by: Ayush Sawal <ayush.sawal@xxxxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> diff --git a/drivers/crypto/chelsio/chcr_core.c b/drivers/crypto/chelsio/chcr_core.c index e937605670ac0..8c2e85f884d3c 100644 --- a/drivers/crypto/chelsio/chcr_core.c +++ b/drivers/crypto/chelsio/chcr_core.c @@ -125,8 +125,6 @@ static void chcr_dev_init(struct uld_ctx *u_ctx) atomic_set(&dev->inflight, 0); mutex_lock(&drv_data.drv_mutex); list_add_tail(&u_ctx->entry, &drv_data.inact_dev); - if (!drv_data.last_dev) - drv_data.last_dev = u_ctx; mutex_unlock(&drv_data.drv_mutex); }