From: Neal Liu <neal_liu@aspeedtech.com>
To: Felipe Balbi <balbi@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Alan Stern <stern@rowland.harvard.edu>
Cc: Roger Quadros <roger.quadros@nokia.com>,
Miaohe Lin <linmiaohe@huawei.com>,
Wesley Cheng <quic_wcheng@quicinc.com>,
"Eric W . Biederman" <ebiederm@xmission.com>,
Matthew Wilcox <willy@infradead.org>,
Nikita Yushchenko <nikita.yoush@cogentembedded.com>,
Cai Huoqing <cai.huoqing@linux.dev>, <linux-usb@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <BMC-SW@aspeedtech.com>
Subject: [PATCH v2] usb: gadget: f_mass_storage: Make CD-ROM emulation works with Windows OS
Date: Fri, 24 Jun 2022 10:19:16 +0800 [thread overview]
Message-ID: <20220624021916.318067-1-neal_liu@aspeedtech.com> (raw)
Add read TOC with format 1 to support CD-ROM emulation with
Windows OS.
This patch is tested on Windows OS Server 2019.
Signed-off-by: Neal Liu <neal_liu@aspeedtech.com>
---
drivers/usb/gadget/function/f_mass_storage.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/gadget/function/f_mass_storage.c b/drivers/usb/gadget/function/f_mass_storage.c
index 3a77bca0ebe1..9edf76c22605 100644
--- a/drivers/usb/gadget/function/f_mass_storage.c
+++ b/drivers/usb/gadget/function/f_mass_storage.c
@@ -1209,7 +1209,8 @@ static int do_read_toc(struct fsg_common *common, struct fsg_buffhd *bh)
switch (format) {
case 0:
- /* Formatted TOC */
+ case 1:
+ /* Formatted TOC, Session info */
len = 4 + 2*8; /* 4 byte header + 2 descriptors */
memset(buf, 0, len);
buf[1] = len - 2; /* TOC Length excludes length field */
@@ -1250,7 +1251,7 @@ static int do_read_toc(struct fsg_common *common, struct fsg_buffhd *bh)
return len;
default:
- /* Multi-session, PMA, ATIP, CD-TEXT not supported/required */
+ /* PMA, ATIP, CD-TEXT not supported/required */
curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
return -EINVAL;
}
--
2.25.1
next reply other threads:[~2022-06-24 2:21 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-24 2:19 Neal Liu [this message]
2022-06-24 6:46 ` [PATCH v2] usb: gadget: f_mass_storage: Make CD-ROM emulation works with Windows OS Greg Kroah-Hartman
2022-06-27 2:31 ` Neal Liu
2022-06-24 6:46 ` Greg Kroah-Hartman
2022-06-24 14:26 ` Alan Stern
2022-06-27 2:56 ` Neal Liu
2022-06-27 14:54 ` Alan Stern
2022-06-28 1:57 ` Neal Liu
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