@@ -2116,23 +2116,18 @@ static int vub300_probe(struct usb_interface *interface,
udev->descriptor.idVendor, udev->descriptor.idProduct,
manufacturer, product, serial_number);
command_out_urb = usb_alloc_urb(0, GFP_KERNEL);
- if (!command_out_urb) {
- retval = -ENOMEM;
- dev_err(&udev->dev, "not enough memory for command_out_urb\n");
- goto error0;
- }
command_res_urb = usb_alloc_urb(0, GFP_KERNEL);
- if (!command_res_urb) {
+ if (!command_res_urb || !command_out_urb) {
retval = -ENOMEM;
- dev_err(&udev->dev, "not enough memory for command_res_urb\n");
- goto error1;
+ dev_err(&udev->dev, "not enough memory for command urbs\n");
+ goto error0;
}
/* this also allocates memory for our VUB300 mmc host device */
mmc = mmc_alloc_host(sizeof(struct vub300_mmc_host), &udev->dev);
if (!mmc) {
retval = -ENOMEM;
dev_err(&udev->dev, "not enough memory for the mmc_host\n");
- goto error4;
+ goto error0;
}
/* MMC core transfer sizes tunable parameters */
mmc->caps = 0;
@@ -2285,7 +2280,7 @@ static int vub300_probe(struct usb_interface *interface,
dev_err(&vub300->udev->dev,
"Could not find two sets of bulk-in/out endpoint pairs\n");
retval = -EINVAL;
- goto error5;
+ goto error1;
}
retval =
usb_control_msg(vub300->udev, usb_rcvctrlpipe(vub300->udev, 0),
@@ -2294,14 +2289,14 @@ static int vub300_probe(struct usb_interface *interface,
0x0000, 0x0000, &vub300->hc_info,
sizeof(vub300->hc_info), HZ);
if (retval < 0)
- goto error5;
+ goto error1;
retval =
usb_control_msg(vub300->udev, usb_rcvctrlpipe(vub300->udev, 0),
SET_ROM_WAIT_STATES,
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
firmware_rom_wait_states, 0x0000, NULL, 0, HZ);
if (retval < 0)
- goto error5;
+ goto error1;
dev_info(&vub300->udev->dev,
"operating_mode = %s %s %d MHz %s %d byte USB packets\n",
(mmc->caps & MMC_CAP_SDIO_IRQ) ? "IRQs" : "POLL",
@@ -2316,14 +2311,14 @@ static int vub300_probe(struct usb_interface *interface,
0x0000, 0x0000, &vub300->system_port_status,
sizeof(vub300->system_port_status), HZ);
if (retval < 0) {
- goto error4;
+ goto error0;
} else if (sizeof(vub300->system_port_status) == retval) {
vub300->card_present =
(0x0001 & vub300->system_port_status.port_flags) ? 1 : 0;
vub300->read_only =
(0x0010 & vub300->system_port_status.port_flags) ? 1 : 0;
} else {
- goto error4;
+ goto error0;
}
usb_set_intfdata(interface, vub300);
INIT_DELAYED_WORK(&vub300->pollwork, vub300_pollwork_thread);
@@ -2351,17 +2346,15 @@ static int vub300_probe(struct usb_interface *interface,
interface_to_InterfaceNumber(interface));
mmc_add_host(mmc);
return 0;
-error5:
+error1:
mmc_free_host(mmc);
/*
* and hence also frees vub300
* which is contained at the end of struct mmc
*/
-error4:
+error0:
usb_free_urb(command_res_urb);
-error1:
usb_free_urb(command_out_urb);
-error0:
usb_put_dev(udev);
return retval;
}
In drivers/mmc/host/vub300.c::vub300_probe() we need both 'command_out_urb' and 'command_res_urb'. Currently we fail to free the former if allocating the latter fails. Fix that and simplify the code a bit at the same time by just doing both allocations and if either fails then free both - usb_free_urb() deals gracefully with NULL pointers, so this is safe. We also initialize 'retval' to '-ENOMEM' when we declare the variable, so there's no reason to re-set it to '-ENOMEM' before jumping to 'error0:' when one of the initial usb_alloc_urb() calls fail(). Also rename the 'error[0145]:' labels to be just 'error0' and 'error1'. Signed-off-by: Jesper Juhl <jj@chaosbits.net> --- drivers/mmc/host/vub300.c | 29 +++++++++++------------------ 1 files changed, 11 insertions(+), 18 deletions(-) This is a resend. I originally submitted this back in January: http://lkml.indiana.edu/hypermail/linux/kernel/1201.3/00305.html but got no response. Note: I have no real way to actually test this patch, so it is compile tested only. Please review carefully before applying. Also please keep me on Cc: when replying.