| Message ID | 4b40fc065771fadc1a5187d533bd760e034ece58.1641732679.git.christophe.jaillet@wanadoo.fr (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | 97486e981ffb865f8845af3c24d5fb19f1ea37e8 |
| Headers | show |
| Series | thunderbolt: Remove useless DMA-32 fallback configuration | expand |
On Sun, Jan 09, 2022 at 01:51:31PM +0100, 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. > > > While at it, include directly <linux/dma-mapping.h> instead on relying on > indirect inclusion. > > [1]: https://lkml.org/lkml/2021/6/7/398 > > Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Applied, thanks!
diff --git a/drivers/thunderbolt/nhi.c b/drivers/thunderbolt/nhi.c index c73da0532be4..4a582183f675 100644 --- a/drivers/thunderbolt/nhi.c +++ b/drivers/thunderbolt/nhi.c @@ -13,6 +13,7 @@ #include <linux/slab.h> #include <linux/errno.h> #include <linux/pci.h> +#include <linux/dma-mapping.h> #include <linux/interrupt.h> #include <linux/module.h> #include <linux/delay.h> @@ -1229,8 +1230,6 @@ static int nhi_probe(struct pci_dev *pdev, const struct pci_device_id *id) spin_lock_init(&nhi->lock); res = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); - if (res) - res = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); if (res) { dev_err(&pdev->dev, "failed to set DMA mask\n"); return res;
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. While at it, include directly <linux/dma-mapping.h> instead on relying on indirect inclusion. [1]: https://lkml.org/lkml/2021/6/7/398 Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> --- drivers/thunderbolt/nhi.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)