This is a note to let you know that I've just added the patch titled
usb: xhci-mtk: set the dma max_seg_size
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
usb-xhci-mtk-set-the-dma-max_seg_size.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 9fd10829a9eb482e192a845675ecc5480e0bfa10 Mon Sep 17 00:00:00 2001
From: Ricardo Ribalda <ribalda@xxxxxxxxxxxx>
Date: Wed, 19 Jul 2023 13:01:04 +0000
Subject: usb: xhci-mtk: set the dma max_seg_size
From: Ricardo Ribalda <ribalda@xxxxxxxxxxxx>
commit 9fd10829a9eb482e192a845675ecc5480e0bfa10 upstream.
Allow devices to have dma operations beyond 64K, and avoid warnings such
as:
DMA-API: xhci-mtk 11200000.usb: mapping sg segment longer than device claims to support [len=98304] [max=65536]
Fixes: 0cbd4b34cda9 ("xhci: mediatek: support MTK xHCI host controller")
Cc: stable <stable@xxxxxxxxxx>
Tested-by: Zubin Mithra <zsm@xxxxxxxxxxxx>
Reported-by: Zubin Mithra <zsm@xxxxxxxxxxxx>
Signed-off-by: Ricardo Ribalda <ribalda@xxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230628-mtk-usb-v2-1-c8c34eb9f229@xxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/host/xhci-mtk.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/usb/host/xhci-mtk.c
+++ b/drivers/usb/host/xhci-mtk.c
@@ -538,6 +538,7 @@ static int xhci_mtk_probe(struct platfor
}
device_init_wakeup(dev, true);
+ dma_set_max_seg_size(dev, UINT_MAX);
xhci = hcd_to_xhci(hcd);
xhci->main_hcd = hcd;
Patches currently in stable-queue which might be from ribalda@xxxxxxxxxxxx are
queue-4.19/usb-xhci-mtk-set-the-dma-max_seg_size.patch
