From: lorenzo@kernel.org
To: linux-wireless@vger.kernel.org
Subject: [PATCH RESEND 0/4] do not use sg if not properly supported by usb controller
Date: Tue, 12 Feb 2019 14:42:38 +0100 [thread overview]
Message-ID: <cover.1549977282.git.lorenzo@kernel.org> (raw)
From: Lorenzo Bianconi <lorenzo@kernel.org>
Use linear fragment and not a single usb scatter-gather buffer in mt76u
{tx,rx} datapath if the usb controller has sg data length constraints.
Moreover add disable_usb_sg module parameter in order to explicitly
disable scatter-gather. SG I/O is not supported by all host drivers and
some users have reported sg issues on AMD IOMMU.
This series has been tested on AMD IOMMU cpus/motherboards and on rpi3+
Changes since RFC:
- rebased on top of 'fix multiple issues in mt76u error path'
https://patchwork.kernel.org/cover/10804919/
I am resending the series since the first attempt seems to be rejected by
the ML
Lorenzo Bianconi (4):
mt76: usb: move mt76u_check_sg in usb.c
mt76: usb: do not use sg buffers for mcu messages
mt76: usb: use a linear buffer for tx/rx datapath if sg is not
supported
mt76: usb: introduce disable_usb_sg parameter
drivers/net/wireless/mediatek/mt76/mt76.h | 14 +-
.../net/wireless/mediatek/mt76/mt76x0/usb.c | 2 +-
.../wireless/mediatek/mt76/mt76x02_usb_mcu.c | 3 +-
.../wireless/mediatek/mt76/mt76x2/usb_init.c | 2 +-
drivers/net/wireless/mediatek/mt76/usb.c | 133 +++++++++++++-----
drivers/net/wireless/mediatek/mt76/usb_mcu.c | 5 +-
6 files changed, 105 insertions(+), 54 deletions(-)
--
2.20.1
next reply other threads:[~2019-02-12 13:43 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-12 13:42 lorenzo [this message]
2019-02-12 13:42 ` [PATCH RESEND 1/4] mt76: usb: move mt76u_check_sg in usb.c lorenzo
2019-02-12 13:42 ` [PATCH RESEND 2/4] mt76: usb: do not use sg buffers for mcu messages lorenzo
2019-02-12 13:42 ` [PATCH RESEND 3/4] mt76: usb: use a linear buffer for tx/rx datapath if sg is not supported lorenzo
2019-02-12 13:42 ` [PATCH RESEND 4/4] mt76: usb: introduce disable_usb_sg parameter lorenzo
2019-02-12 13:45 ` [PATCH 0/4] do not use sg if not properly supported by usb controller Stanislaw Gruszka
2019-02-12 13:51 ` Stanislaw Gruszka
2019-02-12 14:09 ` Lorenzo Bianconi
2019-02-12 14:17 ` Stanislaw Gruszka
2019-02-12 14:25 ` Lorenzo Bianconi
2019-02-12 14:54 ` Stanislaw Gruszka
2019-02-12 15:08 ` Lorenzo Bianconi
2019-02-12 15:26 ` Stanislaw Gruszka
2019-02-12 15:50 ` Lorenzo Bianconi
2019-02-12 22:09 ` Lorenzo Bianconi
2019-02-13 9:44 ` Stanislaw Gruszka
2019-02-13 11:00 ` Lorenzo Bianconi
2019-02-13 11:59 ` Stanislaw Gruszka
2019-02-18 18:56 ` [PATCH RESEND " Felix Fietkau
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