[U-Boot] [PATCH] common/usb_storage.c: Clean up usb_storage_probe()

[U-Boot] [PATCH] common/usb_storage.c: Clean up usb_storage_probe()

[Tom Rini]

We have the protocol and subclass variables which are used only in
disabled debug code.  This code dates back to the initial git import and
seemingly dead code so remove it.

This was detected by Coverity (CID 131117)

Signed-off-by: Tom Rini <trini@konsulko.com>
---
 common/usb_storage.c |   29 ++---------------------------
 1 file changed, 2 insertions(+), 27 deletions(-)

diff --git a/common/usb_storage.c b/common/usb_storage.c
index b390310..1a1633f 100644
--- a/common/usb_storage.c
+++ b/common/usb_storage.c
@@ -1177,25 +1177,9 @@ int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,
 	struct usb_endpoint_descriptor *ep_desc;
 	unsigned int flags = 0;
 
-	int protocol = 0;
-	int subclass = 0;
-
 	/* let's examine the device now */
 	iface = &dev->config.if_desc[ifnum];
 
-#if 0
-	/* this is the place to patch some storage devices */
-	debug("iVendor %X iProduct %X\n", dev->descriptor.idVendor,
-			dev->descriptor.idProduct);
-
-	if ((dev->descriptor.idVendor) == 0x066b &&
-	    (dev->descriptor.idProduct) == 0x0103) {
-		debug("patched for E-USB\n");
-		protocol = US_PR_CB;
-		subclass = US_SC_UFI;	    /* an assumption */
-	}
-#endif
-
 	if (dev->descriptor.bDeviceClass != 0 ||
 			iface->desc.bInterfaceClass != USB_CLASS_MASS_STORAGE ||
 			iface->desc.bInterfaceSubClass < US_SC_MIN ||
@@ -1215,17 +1199,8 @@ int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,
 	ss->ifnum = ifnum;
 	ss->pusb_dev = dev;
 	ss->attention_done = 0;
-
-	/* If the device has subclass and protocol, then use that.  Otherwise,
-	 * take data from the specific interface.
-	 */
-	if (subclass) {
-		ss->subclass = subclass;
-		ss->protocol = protocol;
-	} else {
-		ss->subclass = iface->desc.bInterfaceSubClass;
-		ss->protocol = iface->desc.bInterfaceProtocol;
-	}
+	ss->subclass = iface->desc.bInterfaceSubClass;
+	ss->protocol = iface->desc.bInterfaceProtocol;
 
 	/* set the handler pointers based on the protocol */
 	debug("Transport: ");
-- 
1.7.9.5

[U-Boot] [PATCH] common/usb_storage.c: Clean up usb_storage_probe()

[Bin Meng]

Hi Tom,

On Sun, Oct 11, 2015 at 7:26 PM, Tom Rini <trini@konsulko.com> wrote:
> We have the protocol and subclass variables which are used only in
> disabled debug code.  This code dates back to the initial git import and
> seemingly dead code so remove it.
>
> This was detected by Coverity (CID 131117)

Just out of curiosity, is this Coverity public available for the
community to use?

>
> Signed-off-by: Tom Rini <trini@konsulko.com>
> ---

[snip]

Regards,
Bin

[U-Boot] [PATCH] common/usb_storage.c: Clean up usb_storage_probe()

[Tom Rini]

On Sun, Oct 11, 2015 at 08:05:11PM +0800, Bin Meng wrote:
> Hi Tom,
> 
> On Sun, Oct 11, 2015 at 7:26 PM, Tom Rini <trini@konsulko.com> wrote:
> > We have the protocol and subclass variables which are used only in
> > disabled debug code.  This code dates back to the initial git import and
> > seemingly dead code so remove it.
> >
> > This was detected by Coverity (CID 131117)
> 
> Just out of curiosity, is this Coverity public available for the
> community to use?

We are (and technically we've had this since May 2014) a community
project.  The ELC-E talk about using coverity reminded me to go give
things a spin and see what comes out.  Right now I'm trying to figure
out the best way to get coverage for all of our different build targets
or if we may have to just go with building sandbox only for maximal
coverage (and make use of something like CONFIG_COMPILE_TEST_ONLY from
the kernel).

There is a way to make all defects publically viewable but I don't know
if that's a great idea or not (I don't see anything super duper worrying
but I also haven't really triaged everything) but anyone from the
community can sign up and join the project.

-- 
Tom
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[U-Boot] [PATCH] common/usb_storage.c: Clean up usb_storage_probe()

[Marek Vasut]

On Sunday, October 11, 2015 at 01:26:27 PM, Tom Rini wrote:
> We have the protocol and subclass variables which are used only in
> disabled debug code.  This code dates back to the initial git import and
> seemingly dead code so remove it.
> 
> This was detected by Coverity (CID 131117)
> 
> Signed-off-by: Tom Rini <trini@konsulko.com>

Acked-by: Marek Vasut <marex@denx.de>

You want me to pick it for -next or do you plan this for master ?

Best regards,
Marek Vasut