linux-kernel - [PATCH] usb: gadget: mass_storage: add READ

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Date:   Wed, 26 Jan 2022 18:08:56 +0800
From:   Neal Liu <neal_liu@...eedtech.com>
To:     Felipe Balbi <balbi@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Alan Stern <stern@...land.harvard.edu>,
        "Chen Lin" <chen.lin5@....com.cn>,
        Wesley Cheng <quic_wcheng@...cinc.com>,
        "Nikita Yushchenko" <nikita.yoush@...entembedded.com>,
        Cai Huoqing <caihuoqing@...du.com>,
        <linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-aspeed@...ts.ozlabs.org>
CC:     Neal Liu <neal_liu@...eedtech.com>, <BMC-SW@...eedtech.com>
Subject: [PATCH] usb: gadget: mass_storage: add READ_TOC cmd mask check

READ_TOC cmnd[2] specifies Format Field which is defined
in SCSI-3 spec. Add command mask to avoid marking this
sense data as invalid.

Signed-off-by: Neal Liu <neal_liu@...eedtech.com>
---
 drivers/usb/gadget/function/f_mass_storage.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/gadget/function/f_mass_storage.c b/drivers/usb/gadget/function/f_mass_storage.c
index 46dd11dcb3a8..14d51695b8ae 100644
--- a/drivers/usb/gadget/function/f_mass_storage.c
+++ b/drivers/usb/gadget/function/f_mass_storage.c
@@ -1944,7 +1944,7 @@ static int do_scsi_command(struct fsg_common *common)
 		common->data_size_from_cmnd =
 			get_unaligned_be16(&common->cmnd[7]);
 		reply = check_command(common, 10, DATA_DIR_TO_HOST,
-				      (7<<6) | (1<<1), 1,
+				      (7<<6) | (1<<1) | (1<<2), 1,
 				      "READ TOC");
 		if (reply == 0)
 			reply = do_read_toc(common, bh);
-- 
2.25.1