linux-kernel - [PATCH 2/5] usb: gadget: f_mass_storage: If 'ro'/'cdrom' specified, open file as read-only

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Date:	Tue,  5 Apr 2011 18:36:39 +0300
From:	Roger Quadros <roger.quadros@...ia.com>
To:	gregkh@...e.de
Cc:	mina86@...a86.com, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 2/5] usb: gadget: f_mass_storage: If 'ro'/'cdrom' specified, open file as read-only

If we don't need Write access then attempt to open backing file in Read Only
mode instead of bailing out too soon.

Signed-off-by: Roger Quadros <roger.quadros@...ia.com>
---
 drivers/usb/gadget/f_mass_storage.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/usb/gadget/f_mass_storage.c b/drivers/usb/gadget/f_mass_storage.c
index 90472af..5d7de93 100644
--- a/drivers/usb/gadget/f_mass_storage.c
+++ b/drivers/usb/gadget/f_mass_storage.c
@@ -2810,6 +2810,7 @@ static struct fsg_common *fsg_common_init(struct fsg_common *common,
 	for (i = 0, lcfg = cfg->luns; i < nluns; ++i, ++curlun, ++lcfg) {
 		curlun->cdrom = !!lcfg->cdrom;
 		curlun->ro = lcfg->cdrom || lcfg->ro;
+		curlun->initially_ro = curlun->ro;
 		curlun->removable = lcfg->removable;
 		curlun->dev.release = fsg_lun_release;
 		curlun->dev.parent = &gadget->dev;
-- 
1.6.0.4

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