[PATCH] usb: host: xhci: fix call_kern.cocci warnings

[kernel test robot <lkp@intel.com>]

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CC: kbuild-all(a)lists.01.org
In-Reply-To: <20210526130037.856068-22-lee.jones@linaro.org>
References: <20210526130037.856068-22-lee.jones@linaro.org>
TO: Lee Jones <lee.jones@linaro.org>
TO: lee.jones(a)linaro.org
CC: linux-kernel(a)vger.kernel.org
CC: Mathias Nyman <mathias.nyman@intel.com>
CC: "Greg Kroah-Hartman" <gregkh@linuxfoundation.org>
CC: linux-usb(a)vger.kernel.org

From: kernel test robot <lkp@intel.com>

drivers/usb/host/xhci.c:2791:48-58: ERROR: function xhci_reserve_bandwidth called on line 2911 inside lock on line 2885 but uses GFP_KERNEL

 Find functions that refer to GFP_KERNEL but are called with locks held.

Semantic patch information:
 The proposed change of converting the GFP_KERNEL is not necessarily the
 correct one.  It may be desired to unlock the lock, or to not call the
 function under the lock in the first place.

Generated by: scripts/coccinelle/locks/call_kern.cocci

CC: Lee Jones <lee.jones@linaro.org>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: kernel test robot <lkp@intel.com>
---

url:    https://github.com/0day-ci/linux/commits/Lee-Jones/Rid-W-1-warnings-from-USB/20210526-210403
base:   https://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb.git for-usb-next
:::::: branch date: 6 hours ago
:::::: commit date: 6 hours ago

Please take the patch only if it's a positive warning. Thanks!

 xhci.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -2788,7 +2788,7 @@ static int xhci_reserve_bandwidth(struct
 		return -ENOMEM;
 	}
 
-	ep_bw_info = kzalloc(sizeof(*ep_bw_info) * 31, GFP_KERNEL);
+	ep_bw_info = kzalloc(sizeof(*ep_bw_info) * 31, GFP_ATOMIC);
 	if (!ep_bw_info)
 		return -ENOMEM;