diff options
| author | Christophe JAILLET <christophe.jaillet@wanadoo.fr> | 2022-01-08 07:50:56 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-01-23 12:30:11 +0100 |
| commit | 515a2f507491e7c3818e74ef4f4e088c1fecb190 (patch) | |
| tree | 41178e5330e427b275e1b6315254b1e75d8b6a8b /drivers/misc/mei/pci-me.c | |
| parent | Linux 5.17-rc1 (diff) | |
| download | linux-515a2f507491e7c3818e74ef4f4e088c1fecb190.tar.xz linux-515a2f507491e7c3818e74ef4f4e088c1fecb190.zip | |
mei: me: Use dma_set_mask_and_coherent() and simplify code
Use dma_set_mask_and_coherent() instead of unrolling it with some
dma_set_mask()+dma_set_coherent_mask().
Moreover, as stated in [1], dma_set_mask() with a 64-bit mask will never
fail 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.
While at it, include directly <linux/dma-mapping.h> instead on relying on
indirect inclusion.
[1]: https://lkml.org/lkml/2021/6/7/398
Acked-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/67ddcec656194153830684e6ff4513114e8859d6.1641624544.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/mei/pci-me.c')
| -rw-r--r-- | drivers/misc/mei/pci-me.c | 10 |
1 files changed, 2 insertions, 8 deletions
diff --git a/drivers/misc/mei/pci-me.c b/drivers/misc/mei/pci-me.c index 3a45aaf002ac..a05cdb25d0c4 100644 --- a/drivers/misc/mei/pci-me.c +++ b/drivers/misc/mei/pci-me.c @@ -10,6 +10,7 @@ #include <linux/errno.h> #include <linux/types.h> #include <linux/pci.h> +#include <linux/dma-mapping.h> #include <linux/sched.h> #include <linux/interrupt.h> @@ -192,14 +193,7 @@ static int mei_me_probe(struct pci_dev *pdev, const struct pci_device_id *ent) goto end; } - if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)) || - dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) { - - err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); - if (err) - err = dma_set_coherent_mask(&pdev->dev, - DMA_BIT_MASK(32)); - } + err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); if (err) { dev_err(&pdev->dev, "No usable DMA configuration, aborting\n"); goto end; |