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usb: gadget: udc: net2272: Fix bitwise and boolean operations

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commit 07c69f1148da7de3978686d3af9263325d9d60bd upstream.

(!x & y) strikes again.

Fix bitwise and boolean operations by enclosing the expression:

	intcsr & (1 << NET2272_PCI_IRQ)

in parentheses, before applying the boolean operator '!'.

Notice that this code has been there since 2011. So, it would
be helpful if someone can double-check this.

This issue was detected with the help of Coccinelle.

Fixes: ceb80363b2 ("USB: net2272: driver for PLX NET2272 USB device controller")
Cc: stable@vger.kernel.org
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Gustavo A. R. Silva 2019-01-22 15:28:08 -06:00 • committed by Greg Kroah-Hartman
parent ff8c1826ee
commit b0f59c3d1f
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/gadget/udc/net2272.c
View file

@ -2100,7 +2100,7 @@ static irqreturn_t net2272_irq(int irq, void *_dev)
#if defined(PLX_PCI_RDK2)
/* see if PCI int for us by checking irqstat */
intcsr = readl(dev->rdk2.fpga_base_addr + RDK2_IRQSTAT);
if (!intcsr & (1 << NET2272_PCI_IRQ)) {
if (!(intcsr & (1 << NET2272_PCI_IRQ))) {
spin_unlock(&dev->lock);
return IRQ_NONE;
}