diff options
Diffstat (limited to 'package/kernel/mac80211/patches/rt2x00/022-rt2x00-check-number-of-EPROTO-errors.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/rt2x00/022-rt2x00-check-number-of-EPROTO-errors.patch | 96 |
1 files changed, 0 insertions, 96 deletions
diff --git a/package/kernel/mac80211/patches/rt2x00/022-rt2x00-check-number-of-EPROTO-errors.patch b/package/kernel/mac80211/patches/rt2x00/022-rt2x00-check-number-of-EPROTO-errors.patch deleted file mode 100644 index 251ac287bf..0000000000 --- a/package/kernel/mac80211/patches/rt2x00/022-rt2x00-check-number-of-EPROTO-errors.patch +++ /dev/null @@ -1,96 +0,0 @@ -From patchwork Tue Mar 12 09:51:42 2019 -Content-Type: text/plain; charset="utf-8" -MIME-Version: 1.0 -Content-Transfer-Encoding: 7bit -X-Patchwork-Submitter: Stanislaw Gruszka <sgruszka@redhat.com> -X-Patchwork-Id: 10848961 -X-Patchwork-Delegate: kvalo@adurom.com -From: Stanislaw Gruszka <sgruszka@redhat.com> -To: linux-wireless@vger.kernel.org -Cc: =?utf-8?q?Tomislav_Po=C5=BEega?= <pozega.tomislav@gmail.com>, - Daniel Golle <daniel@makrotopia.org>, Felix Fietkau <nbd@nbd.name>, - Mathias Kresin <dev@kresin.me> -Subject: [PATCH v3 3/4] rt2x00: check number of EPROTO errors -Date: Tue, 12 Mar 2019 10:51:42 +0100 -Message-Id: <1552384303-29529-4-git-send-email-sgruszka@redhat.com> -In-Reply-To: <1552384303-29529-1-git-send-email-sgruszka@redhat.com> -References: <1552384303-29529-1-git-send-email-sgruszka@redhat.com> - -Some USB host devices/drivers on some conditions can always return -EPROTO error on submitted URBs. That can cause infinity loop in the -rt2x00 driver. - -Since we can have single EPROTO errors we can not mark as device as -removed to avoid infinity loop. However we can count consecutive -EPROTO errors and mark device as removed if get lot of it. -I choose number 10 as threshold. - -Reported-and-tested-by: Randy Oostdyk <linux-kernel@oostdyk.com> -Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> ---- - drivers/net/wireless/ralink/rt2x00/rt2x00.h | 1 + - drivers/net/wireless/ralink/rt2x00/rt2x00usb.c | 22 +++++++++++++++++++--- - 2 files changed, 20 insertions(+), 3 deletions(-) - ---- a/drivers/net/wireless/ralink/rt2x00/rt2x00.h -+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00.h -@@ -1017,6 +1017,7 @@ struct rt2x00_dev { - unsigned int extra_tx_headroom; - - struct usb_anchor *anchor; -+ unsigned int num_proto_errs; - - /* Clock for System On Chip devices. */ - struct clk *clk; ---- a/drivers/net/wireless/ralink/rt2x00/rt2x00usb.c -+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00usb.c -@@ -31,6 +31,22 @@ - #include "rt2x00.h" - #include "rt2x00usb.h" - -+static bool rt2x00usb_check_usb_error(struct rt2x00_dev *rt2x00dev, int status) -+{ -+ if (status == -ENODEV || status == -ENOENT) -+ return true; -+ -+ if (status == -EPROTO || status == -ETIMEDOUT) -+ rt2x00dev->num_proto_errs++; -+ else -+ rt2x00dev->num_proto_errs = 0; -+ -+ if (rt2x00dev->num_proto_errs > 3) -+ return true; -+ -+ return false; -+} -+ - /* - * Interfacing with the HW. - */ -@@ -57,7 +73,7 @@ int rt2x00usb_vendor_request(struct rt2x - if (status >= 0) - return 0; - -- if (status == -ENODEV || status == -ENOENT) { -+ if (rt2x00usb_check_usb_error(rt2x00dev, status)) { - /* Device has disappeared. */ - clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); - break; -@@ -321,7 +337,7 @@ static bool rt2x00usb_kick_tx_entry(stru - - status = usb_submit_urb(entry_priv->urb, GFP_ATOMIC); - if (status) { -- if (status == -ENODEV || status == -ENOENT) -+ if (rt2x00usb_check_usb_error(rt2x00dev, status)) - clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); - set_bit(ENTRY_DATA_IO_FAILED, &entry->flags); - rt2x00lib_dmadone(entry); -@@ -410,7 +426,7 @@ static bool rt2x00usb_kick_rx_entry(stru - - status = usb_submit_urb(entry_priv->urb, GFP_ATOMIC); - if (status) { -- if (status == -ENODEV || status == -ENOENT) -+ if (rt2x00usb_check_usb_error(rt2x00dev, status)) - clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); - set_bit(ENTRY_DATA_IO_FAILED, &entry->flags); - rt2x00lib_dmadone(entry); |