Re: [patch] cxlflash: shift wrapping bug in afu_link_reset()

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Dan Carpenter <dan.carpenter@xxxxxxxxxx> writes:

> "port_sel" is a u64 so the shifting should also be a 64 bit shift.
>
> Fixes: c21e0bbfc485 ('cxlflash: Base support for IBM CXL Flash Adapter')
> Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
>
> diff --git a/drivers/scsi/cxlflash/main.c b/drivers/scsi/cxlflash/main.c
> index 0720d2f..f97421d 100644
> --- a/drivers/scsi/cxlflash/main.c
> +++ b/drivers/scsi/cxlflash/main.c
> @@ -1179,7 +1179,7 @@ static void afu_link_reset(struct afu *afu, int port, u64 *fc_regs)
>  
>  	/* first switch the AFU to the other links, if any */
>  	port_sel = readq_be(&afu->afu_map->global.regs.afu_port_sel);
> -	port_sel &= ~(1 << port);
> +	port_sel &= ~(1ULL << port);
>  	writeq_be(port_sel, &afu->afu_map->global.regs.afu_port_sel);
>  	cxlflash_afu_sync(afu, 0, 0, AFU_GSYNC);
>  
> @@ -1196,7 +1196,7 @@ static void afu_link_reset(struct afu *afu, int port, u64 *fc_regs)
>  		       __func__, port);
>  
>  	/* switch back to include this port */
> -	port_sel |= (1 << port);
> +	port_sel |= (1ULL << port);
>  	writeq_be(port_sel, &afu->afu_map->global.regs.afu_port_sel);
>  	cxlflash_afu_sync(afu, 0, 0, AFU_GSYNC);
>  
> --
> To unsubscribe from this list: send the line "unsubscribe linux-scsi" in
> the body of a message to majordomo@xxxxxxxxxxxxxxx
> More majordomo info at  http://vger.kernel.org/majordomo-info.html

Reviewed-by: Johannes Thumshirn <jthumshirn@xxxxxxx>

-- 
Johannes Thumshirn                                           Storage
jthumshirn@xxxxxxx                                 +49 911 74053 689
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: Felix Imendörffer, Jane Smithard, Graham Norton
HRB 21284 (AG Nürnberg)
Key fingerprint = EC38 9CAB C2C4 F25D 8600  D0D0 0393 969D 2D76 0850
--
To unsubscribe from this list: send the line "unsubscribe linux-scsi" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [SCSI Target Devel]     [Linux SCSI Target Infrastructure]     [Kernel Newbies]     [IDE]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux ATA RAID]     [Linux IIO]     [Samba]     [Device Mapper]
  Powered by Linux