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From: Jim Lin <jilin@nvidia.com>
To: <stern@rowland.harvard.edu>, <linux-usb@vger.kernel.org>
Cc: <usb-storage@lists.one-eyed-alien.net>, Jim Lin <jilin@nvidia.com>
Subject: [PATCH 1/1] usb: storage: Add quirk for Samsung Fit flash
Date: Mon, 2 Mar 2020 22:21:35 +0800	[thread overview]
Message-ID: <1583158895-31342-1-git-send-email-jilin@nvidia.com> (raw)

Current driver has 240 (USB2.0) and 2048 (USB3.0) as max_sectors,
e.g., /sys/bus/scsi/devices/0:0:0:0/max_sectors

If data access times out, driver error handling will issue a port
reset.
Sometimes Samsung Fit (090C:1000) flash disk will not respond to
later Set Address or Get Descriptor command.

Adding this quirk to limit max_sectors to 64 sectors to avoid issue
occurring.

Signed-off-by: Jim Lin <jilin@nvidia.com>
---
 drivers/usb/storage/unusual_devs.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h
index 1cd9b6305b06..1880f3e13f57 100644
--- a/drivers/usb/storage/unusual_devs.h
+++ b/drivers/usb/storage/unusual_devs.h
@@ -1258,6 +1258,12 @@ UNUSUAL_DEV( 0x090a, 0x1200, 0x0000, 0x9999,
 		USB_SC_RBC, USB_PR_BULK, NULL,
 		0 ),
 
+UNUSUAL_DEV(0x090c, 0x1000, 0x1100, 0x1100,
+		"Samsung",
+		"Flash Drive FIT",
+		USB_SC_DEVICE, USB_PR_DEVICE, NULL,
+		US_FL_MAX_SECTORS_64),
+
 /* aeb */
 UNUSUAL_DEV( 0x090c, 0x1132, 0x0000, 0xffff,
 		"Feiya",
-- 
2.1.4


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             reply	other threads:[~2020-03-02 14:21 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-02 14:21 Jim Lin [this message]
2020-03-02 15:46 ` [PATCH 1/1] usb: storage: Add quirk for Samsung Fit flash Alan Stern
2020-05-02 13:56 ` Atanas Dinev
2020-05-02 14:38   ` Jim Lin
2022-09-12 12:58     ` sunghwan jung

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