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authorChristophe JAILLET <christophe.jaillet@wanadoo.fr>2022-01-09 13:51:31 +0100
committerMika Westerberg <mika.westerberg@linux.intel.com>2022-01-24 16:55:56 +0300
commit97486e981ffb865f8845af3c24d5fb19f1ea37e8 (patch)
tree1bef864ba0f2cb79da33609d11eaaae026c69482 /drivers/thunderbolt/nhi.c
parente783362eb54cd99b2cac8b3a9aeac942e6f6ac07 (diff)
downloadlinux-97486e981ffb865f8845af3c24d5fb19f1ea37e8.tar.bz2
thunderbolt: Remove useless DMA-32 fallback configuration
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> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'drivers/thunderbolt/nhi.c')
-rw-r--r--drivers/thunderbolt/nhi.c3
1 files changed, 1 insertions, 2 deletions
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;