From 2a07a5ddb135e4bd15bf6468b7d2daa4deeaf07d Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@suse.de>
Date: Thu, 8 Sep 2022 11:51:09 +0200
Subject: [PATCH] drm/udl: Increase the default URB list size to 20
Git-commit: 2a07a5ddb135e4bd15bf6468b7d2daa4deeaf07d
Patch-mainline: v6.1-rc1
References: bsc#1195917

It seems that the current size (4) for the URB list is too small on
some devices, and it resulted in the occasional stalls.  Increase the
default URB list size to 20 for working around it.

Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20220908095115.23396-7-tiwai@suse.de

---
 drivers/gpu/drm/udl/udl_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/udl/udl_main.c b/drivers/gpu/drm/udl/udl_main.c
index 6aed6e0f669c..2b7eafd48ec2 100644
--- a/drivers/gpu/drm/udl/udl_main.c
+++ b/drivers/gpu/drm/udl/udl_main.c
@@ -20,7 +20,7 @@
 #define NR_USB_REQUEST_CHANNEL 0x12
 
 #define MAX_TRANSFER (PAGE_SIZE*16 - BULK_SIZE)
-#define WRITES_IN_FLIGHT (4)
+#define WRITES_IN_FLIGHT (20)
 #define MAX_VENDOR_DESCRIPTOR_SIZE 256
 
 static int udl_parse_vendor_descriptor(struct udl_device *udl)
-- 
2.35.3