linux-kernel - [PATCH] [RESEND] usb: gadget: Remove the LUN checks which are always true

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Date:	Sun, 8 May 2011 15:56:17 +0300
From:	Maxin B John <maxin.john@...il.com>
To:	greg@...ah.com
Cc:	mina86@...a86.com, stern@...land.harvard.edu,
	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] [RESEND] usb: gadget: Remove the LUN checks which are
 always true

Comparing an unsigned integer with greater than or equal to zero is
always true.  So, it is safe to remove similar checks from 
'f_mass_storage.c' and 'file_storage.c'


Signed-off-by: Maxin B. John <maxin.john@...il.com>
Acked-by: Michal Nazarewicz <mina86@...a86.com>
Acked-by: Alan Stern <stern@...land.harvard.edu>
---
diff --git a/drivers/usb/gadget/f_mass_storage.c b/drivers/usb/gadget/f_mass_storage.c
index 6d8e533..cade79e 100644
--- a/drivers/usb/gadget/f_mass_storage.c
+++ b/drivers/usb/gadget/f_mass_storage.c
@@ -1910,7 +1910,7 @@ static int check_command(struct fsg_common *common, int cmnd_size,
 		    common->lun, lun);
 
 	/* Check the LUN */
-	if (common->lun >= 0 && common->lun < common->nluns) {
+	if (common->lun < common->nluns) {
 		curlun = &common->luns[common->lun];
 		common->curlun = curlun;
 		if (common->cmnd[0] != REQUEST_SENSE) {
diff --git a/drivers/usb/gadget/file_storage.c b/drivers/usb/gadget/file_storage.c
index a6eacb5..a9c5177 100644
--- a/drivers/usb/gadget/file_storage.c
+++ b/drivers/usb/gadget/file_storage.c
@@ -2314,7 +2314,7 @@ static int check_command(struct fsg_dev *fsg, int cmnd_size,
 		fsg->lun = lun;		// Use LUN from the command
 
 	/* Check the LUN */
-	if (fsg->lun >= 0 && fsg->lun < fsg->nluns) {
+	if (fsg->lun < fsg->nluns) {
 		fsg->curlun = curlun = &fsg->luns[fsg->lun];
 		if (fsg->cmnd[0] != REQUEST_SENSE) {
 			curlun->sense_data = SS_NO_SENSE;
--
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