From: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
To: nbd@nbd.name
Cc: linux-wireless@vger.kernel.org, rosenp@gmail.com, sgruszka@redhat.com
Subject: [RFC 0/4] do not use sg if not properly supported by usb controller
Date: Tue, 15 Jan 2019 13:33:41 +0100 [thread overview]
Message-ID: <cover.1547549771.git.lorenzo.bianconi@redhat.com> (raw)
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. Some users have reported sg issues on AMD IOMMU
Lorenzo Bianconi (4):
mt76: usb: move mt76u_check_sg in usb.c
mt76: usb: do not use sg buffer for fw upload
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 | 9 +-
.../wireless/mediatek/mt76/mt76x2/usb_init.c | 2 +-
drivers/net/wireless/mediatek/mt76/usb.c | 132 +++++++++++++-----
drivers/net/wireless/mediatek/mt76/usb_mcu.c | 5 +-
6 files changed, 107 insertions(+), 57 deletions(-)
--
2.20.1
next reply other threads:[~2019-01-15 12:34 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-15 12:33 Lorenzo Bianconi [this message]
2019-01-15 12:33 ` [RFC 1/4] mt76: usb: move mt76u_check_sg in usb.c Lorenzo Bianconi
2019-01-15 12:33 ` [RFC 2/4] mt76: usb: do not use sg buffer for fw upload Lorenzo Bianconi
2019-01-15 12:33 ` [RFC 3/4] mt76: usb: use a linear buffer for tx/rx datapath if sg is not supported Lorenzo Bianconi
2019-01-15 12:33 ` [RFC 4/4] mt76: usb: introduce disable_usb_sg parameter Lorenzo Bianconi
2019-01-15 15:35 ` [RFC 0/4] do not use sg if not properly supported by usb controller Stanislaw Gruszka
2019-01-15 15:47 ` Lorenzo Bianconi
2019-01-16 11:19 ` Stanislaw Gruszka
2019-01-16 11:44 ` Lorenzo Bianconi
2019-01-16 12:21 ` Stanislaw Gruszka
2019-01-16 13:40 ` Lorenzo Bianconi
2019-01-16 14:39 ` Stanislaw Gruszka
2019-01-16 17:16 ` Lorenzo Bianconi
2019-01-16 17:40 ` Rosen Penev
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