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authorVincent Cuissard <cuissard@marvell.com>2015-11-03 21:19:36 +0300
committerSamuel Ortiz <sameo@linux.intel.com>2015-11-05 02:32:25 +0300
commit82aff3ea3b87892ce1476dad83de211741b3ac00 (patch)
treee43189a058731d662bbbd4223db6c7edd8d5d50e /drivers/nfc
parent6f8c53695d6521c36052d39e29ac1e51ef37eba7 (diff)
downloadlinux-82aff3ea3b87892ce1476dad83de211741b3ac00.tar.xz
NFC: nfcmrvl: avoid being stuck on FW dnld timeout
FW Download procedure can block on del_timer_sync because the timer is not running. This patch check that timer is scheduled before cancelling it. Signed-off-by: Vincent Cuissard <cuissard@marvell.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/nfc')
-rw-r--r--drivers/nfc/nfcmrvl/fw_dnld.c12
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/nfc/nfcmrvl/fw_dnld.c b/drivers/nfc/nfcmrvl/fw_dnld.c
index bfa771392b1f..f8dcdf4b24f6 100644
--- a/drivers/nfc/nfcmrvl/fw_dnld.c
+++ b/drivers/nfc/nfcmrvl/fw_dnld.c
@@ -113,9 +113,12 @@ static void fw_dnld_over(struct nfcmrvl_private *priv, u32 error)
}
atomic_set(&priv->ndev->cmd_cnt, 0);
- del_timer_sync(&priv->ndev->cmd_timer);
- del_timer_sync(&priv->fw_dnld.timer);
+ if (timer_pending(&priv->ndev->cmd_timer))
+ del_timer_sync(&priv->ndev->cmd_timer);
+
+ if (timer_pending(&priv->fw_dnld.timer))
+ del_timer_sync(&priv->fw_dnld.timer);
nfc_info(priv->dev, "FW loading over (%d)]\n", error);
@@ -472,9 +475,12 @@ void nfcmrvl_fw_dnld_deinit(struct nfcmrvl_private *priv)
void nfcmrvl_fw_dnld_recv_frame(struct nfcmrvl_private *priv,
struct sk_buff *skb)
{
+ /* Discard command timer */
+ if (timer_pending(&priv->ndev->cmd_timer))
+ del_timer_sync(&priv->ndev->cmd_timer);
+
/* Allow next command */
atomic_set(&priv->ndev->cmd_cnt, 1);
- del_timer_sync(&priv->ndev->cmd_timer);
/* Queue and trigger rx work */
skb_queue_tail(&priv->fw_dnld.rx_q, skb);