diff options
Diffstat (limited to 'package/kernel/mac80211/patches/rt2x00/068-rt2x00usb-remove-unnecessary-rx-flag-checks.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/rt2x00/068-rt2x00usb-remove-unnecessary-rx-flag-checks.patch | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/rt2x00/068-rt2x00usb-remove-unnecessary-rx-flag-checks.patch b/package/kernel/mac80211/patches/rt2x00/068-rt2x00usb-remove-unnecessary-rx-flag-checks.patch new file mode 100644 index 0000000000..3fa5ee6d38 --- /dev/null +++ b/package/kernel/mac80211/patches/rt2x00/068-rt2x00usb-remove-unnecessary-rx-flag-checks.patch @@ -0,0 +1,51 @@ +From 3b902fa811cf6bf7f9ad0ffb77d0a133e0b3bd61 Mon Sep 17 00:00:00 2001 +From: Soeren Moch <smoch@web.de> +Date: Mon, 1 Jul 2019 12:53:14 +0200 +Subject: [PATCH 09/15] rt2x00usb: remove unnecessary rx flag checks + +In contrast to the TX path, there is no need to separately read the transfer +status from the device after receiving RX data. Consequently, there is no +real STATUS_PENDING RX processing queue entry state. +Remove the unnecessary ENTRY_DATA_STATUS_PENDING flag checks from the RX path. +Also remove the misleading comment about reading RX status from device. + +Suggested-by: Stanislaw Gruszka <sgruszka@redhat.com> +Signed-off-by: Soeren Moch <smoch@web.de> +Acked-by: Stanislaw Gruszka <sgruszka@redhat.com> +Signed-off-by: Kalle Valo <kvalo@codeaurora.org> +--- + drivers/net/wireless/ralink/rt2x00/rt2x00usb.c | 9 +++------ + 1 file changed, 3 insertions(+), 6 deletions(-) + +--- a/drivers/net/wireless/ralink/rt2x00/rt2x00usb.c ++++ b/drivers/net/wireless/ralink/rt2x00/rt2x00usb.c +@@ -360,8 +360,7 @@ static void rt2x00usb_work_rxdone(struct + while (!rt2x00queue_empty(rt2x00dev->rx)) { + entry = rt2x00queue_get_entry(rt2x00dev->rx, Q_INDEX_DONE); + +- if (test_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags) || +- !test_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags)) ++ if (test_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags)) + break; + + /* +@@ -400,8 +399,7 @@ static void rt2x00usb_interrupt_rxdone(s + rt2x00lib_dmadone(entry); + + /* +- * Schedule the delayed work for reading the RX status +- * from the device. ++ * Schedule the delayed work for processing RX data + */ + queue_work(rt2x00dev->workqueue, &rt2x00dev->rxdone_work); + } +@@ -413,8 +411,7 @@ static bool rt2x00usb_kick_rx_entry(stru + struct queue_entry_priv_usb *entry_priv = entry->priv_data; + int status; + +- if (test_and_set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags) || +- test_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags)) ++ if (test_and_set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags)) + return false; + + rt2x00lib_dmastart(entry); |