From: Ganapathi Bhat <gbhat@marvell.com>
To: <linux-wireless@vger.kernel.org>
Cc: Cathy Luo <cluo@marvell.com>, Xinming Hu <huxm@marvell.com>,
Zhiyuan Yang <yangzy@marvell.com>, James Cao <jcao@marvell.com>,
Mangesh Malusare <mmangesh@marvell.com>,
Ganapathi Bhat <gbhat@marvell.com>
Subject: [PATCH 2/2] mwifiex: print URB submit failure error after threshold attemtps
Date: Thu, 31 Aug 2017 01:21:14 +0530 [thread overview]
Message-ID: <1504122674-3379-3-git-send-email-gbhat@marvell.com> (raw)
In-Reply-To: <1504122674-3379-1-git-send-email-gbhat@marvell.com>
Current driver prints dev_alloc_skb failures everytime while
submitting RX URBs. This failure might be frequent in some
low resource platforms. So, wait for a threshold failure
count before start priting the error. This change is a follow
up for the 'commit 7b368e3d15c3
("mwifiex: resubmit failed to submit RX URBs in main thread")'
Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: Ganapathi Bhat <gbhat@marvell.com>
---
drivers/net/wireless/marvell/mwifiex/usb.c | 11 +++++++++--
drivers/net/wireless/marvell/mwifiex/usb.h | 2 ++
2 files changed, 11 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/marvell/mwifiex/usb.c b/drivers/net/wireless/marvell/mwifiex/usb.c
index f4f2b9b..98f6973 100644
--- a/drivers/net/wireless/marvell/mwifiex/usb.c
+++ b/drivers/net/wireless/marvell/mwifiex/usb.c
@@ -300,9 +300,16 @@ static int mwifiex_usb_submit_rx_urb(struct urb_context *ctx, int size)
if (card->rx_cmd_ep != ctx->ep) {
ctx->skb = dev_alloc_skb(size);
if (!ctx->skb) {
- mwifiex_dbg(adapter, ERROR,
- "%s: dev_alloc_skb failed\n", __func__);
+ if (++card->rx_urb_failure_count >
+ MWIFIEX_RX_URB_FAILURE_THRESHOLD) {
+ mwifiex_dbg(adapter, ERROR,
+ "%s: dev_alloc_skb failed, failure count = %u\n",
+ __func__,
+ card->rx_urb_failure_count);
+ }
return -ENOMEM;
+ } else {
+ card->rx_urb_failure_count = 0;
}
}
diff --git a/drivers/net/wireless/marvell/mwifiex/usb.h b/drivers/net/wireless/marvell/mwifiex/usb.h
index 37abd22..dc4750b 100644
--- a/drivers/net/wireless/marvell/mwifiex/usb.h
+++ b/drivers/net/wireless/marvell/mwifiex/usb.h
@@ -43,6 +43,7 @@
#define MWIFIEX_TX_DATA_URB 6
#define MWIFIEX_RX_DATA_URB 6
#define MWIFIEX_USB_TIMEOUT 100
+#define MWIFIEX_RX_URB_FAILURE_THRESHOLD 20
#define USB8766_DEFAULT_FW_NAME "mrvl/usb8766_uapsta.bin"
#define USB8797_DEFAULT_FW_NAME "mrvl/usb8797_uapsta.bin"
@@ -117,6 +118,7 @@ struct usb_card_rec {
u8 rx_cmd_interval;
int tx_cmd_ep_type;
u8 tx_cmd_interval;
+ u32 rx_urb_failure_count;
};
struct fw_header {
--
1.9.1
next prev parent reply other threads:[~2017-08-30 19:57 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-30 19:51 [PATCH 0/2] mwifiex: address URB submission failure Ganapathi Bhat
2017-08-30 19:51 ` [PATCH 1/2] mwifiex: resubmit failed to submit RX URBs in main thread Ganapathi Bhat
2017-09-20 12:13 ` Kalle Valo
2017-08-30 19:51 ` Ganapathi Bhat [this message]
2017-09-01 4:05 ` [PATCH 2/2] mwifiex: print URB submit failure error after threshold attemtps Joe Perches
2017-09-14 14:14 ` [EXT] " Ganapathi Bhat
2017-09-14 21:59 ` Brian Norris
2017-09-15 9:46 ` Ganapathi Bhat
2017-09-20 4:30 ` Kalle Valo
2017-09-20 6:02 ` Brian Norris
2017-09-20 12:09 ` Kalle Valo
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