lkml.org 
[lkml]   [2022]   [Jan]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [PATCH] i2c: amd-mp2: Remove useless DMA-32 fallback configuration
From
On 1/9/2022 6:04 PM, Christophe JAILLET wrote:
> As stated in [1], dma_set_mask() with a 64-bit mask never fails if
> dev->dma_mask is non-NULL.
> So, if it fails, the 32 bits case will also fail for the same reason.
>
>
> Simplify code and remove some dead code accordingly.
>
> [1]: https://lkml.org/lkml/2021/6/7/398
>
> Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
> ---
> drivers/i2c/busses/i2c-amd-mp2-pci.c | 7 ++-----
> 1 file changed, 2 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/i2c/busses/i2c-amd-mp2-pci.c b/drivers/i2c/busses/i2c-amd-mp2-pci.c
> index adf0e8c1ec01..f57077a7448d 100644
> --- a/drivers/i2c/busses/i2c-amd-mp2-pci.c
> +++ b/drivers/i2c/busses/i2c-amd-mp2-pci.c
> @@ -308,11 +308,8 @@ static int amd_mp2_pci_init(struct amd_mp2_dev *privdata,
> pci_set_master(pci_dev);
>
> rc = dma_set_mask(&pci_dev->dev, DMA_BIT_MASK(64));
> - if (rc) {
> - rc = dma_set_mask(&pci_dev->dev, DMA_BIT_MASK(32));
> - if (rc)
> - goto err_dma_mask;
> - }
> + if (rc)
> + goto err_dma_mask;
>
> /* Set up intx irq */
> writel(0, privdata->mmio + AMD_P2C_MSG_INTEN);
>
Acked-by: Nehal Bakulchandra Shah<Nehal-bakulchandra.Shah@amd.com>

\
 
 \ /
  Last update: 2022-01-13 11:29    [W:0.052 / U:0.960 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site