On 20/02/15 19:52, H Hartley Sweeten wrote:
The read/write of the PLX_INTRCS_REG during the driver detach is not necessary. The rtd_reset() function writes 0 to this register which will disable all interrupts.This also fixes a dereference after null check reported by coverity. Reported-by: coverity (CID 751066) Signed-off-by: H Hartley Sweeten <hswee...@visionengravers.com> Cc: Ian Abbott <abbo...@mev.co.uk> Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org> --- drivers/staging/comedi/drivers/rtd520.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/drivers/staging/comedi/drivers/rtd520.c b/drivers/staging/comedi/drivers/rtd520.c index c94ad12..f9473f9 100644 --- a/drivers/staging/comedi/drivers/rtd520.c +++ b/drivers/staging/comedi/drivers/rtd520.c @@ -1299,12 +1299,8 @@ static void rtd_detach(struct comedi_device *dev) /* Shut down any board ops by resetting it */ if (dev->mmio && devpriv->lcfg) rtd_reset(dev); - if (dev->irq) { - writel(readl(devpriv->lcfg + PLX_INTRCS_REG) & - ~(ICS_PLIE | ICS_DMA0_E | ICS_DMA1_E), - devpriv->lcfg + PLX_INTRCS_REG); + if (dev->irq) free_irq(dev->irq, dev); - } if (dev->mmio) iounmap(dev->mmio); if (devpriv->las1)
Reviewed-by: Ian Abbott <abbo...@mev.co.uk> -- -=( Ian Abbott @ MEV Ltd. E-mail: <abbo...@mev.co.uk> )=- -=( Web: http://www.mev.co.uk/ )=- _______________________________________________ devel mailing list de...@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
