On 02/17/2016 09:32 PM, Amitoj Kaur Chawla wrote:
> The return value of of_ioremap on failure should be -ENODEV and not
> -1.
>
> Found using Coccinelle. A simplified version of the semantic patch
> used is:
>
> //<smpl>
> @@
> expression *e;
> @@
>
> e = of_ioremap(...);
> if (e == NULL) {
> ...
> return
> - -1
> + -ENODEV
> ;
> }
> //</smpl>
>
> The single call site only checks that the return value is less than 0,
> hence no change is required at the call site.
>
> Signed-off-by: Amitoj Kaur Chawla <[email protected]>
> ---
> drivers/scsi/qlogicpti.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/scsi/qlogicpti.c b/drivers/scsi/qlogicpti.c
> index 676385f..69bfc0a 100644
> --- a/drivers/scsi/qlogicpti.c
> +++ b/drivers/scsi/qlogicpti.c
> @@ -710,7 +710,7 @@ static int qpti_map_regs(struct qlogicpti *qpti)
> "PTI Qlogic/ISP");
> if (!qpti->qregs) {
> printk("PTI: Qlogic/ISP registers are unmappable\n");
> - return -1;
> + return -ENODEV;
> }
> if (qpti->is_pti) {
> qpti->sreg = of_ioremap(&op->resource[0], (16 * 4096),
> @@ -718,7 +718,7 @@ static int qpti_map_regs(struct qlogicpti *qpti)
> "PTI Qlogic/ISP statreg");
> if (!qpti->sreg) {
> printk("PTI: Qlogic/ISP status register is
> unmappable\n");
> - return -1;
> + return -ENODEV;
> }
> }
> return 0;
>
Reviewed-by: Hannes Reinecke <[email protected]>
Cheers,
Hannes
--
Dr. Hannes Reinecke zSeries & Storage
[email protected] +49 911 74053 688
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: J. Hawn, J. Guild, F. Imendörffer, HRB 16746 (AG Nürnberg)
