lkml.org 
[lkml]   [2015]   [May]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [PATCH] ata: hpt366: fix constant cast warning
Date

Hi,

On Tuesday, May 19, 2015 04:34:05 PM Arnd Bergmann wrote:
> gcc-5.x warns about a preexisting problem in the hpt36x pata driver:
>
> drivers/ata/pata_hpt366.c: In function 'hpt36x_init_one':
> drivers/ata/pata_hpt366.c:376:9: warning: assignment discards 'const' qualifier from pointer target type [-Wdiscarded-array-qualifiers]
>
> Other ata drivers have the same problem, as ata_pci_bmdma_init_one
> takes a non-const pointer, and they solve it by using a cast to
> turn that pointer into a normal non-const pointer.
>
> I also tried to change the ata core code to make host->private_data
> a const pointer, but that quickly got out of hand, as some other
> drivers expect it to be writable, so I ended up using the same
> hack as the others here.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Your patch looks fine to me, thanks.

Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>

Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung R&D Institute Poland
Samsung Electronics

> diff --git a/drivers/ata/pata_hpt366.c b/drivers/ata/pata_hpt366.c
> index cbc3de793d1d..0038dc4c06c7 100644
> --- a/drivers/ata/pata_hpt366.c
> +++ b/drivers/ata/pata_hpt366.c
> @@ -352,7 +352,7 @@ static int hpt36x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
> };
> const struct ata_port_info *ppi[] = { &info_hpt366, NULL };
>
> - void *hpriv = NULL;
> + const void *hpriv = NULL;
> u32 reg1;
> int rc;
>
> @@ -383,7 +383,7 @@ static int hpt36x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
> break;
> }
> /* Now kick off ATA set up */
> - return ata_pci_bmdma_init_one(dev, ppi, &hpt36x_sht, hpriv, 0);
> + return ata_pci_bmdma_init_one(dev, ppi, &hpt36x_sht, (void *)hpriv, 0);
> }
>
> #ifdef CONFIG_PM_SLEEP



\
 
 \ /
  Last update: 2015-05-20 14:01    [W:0.057 / U:0.092 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site