diff options
| author | Michael Kelley <mikelley@microsoft.com> | 2022-02-06 11:36:56 -0800 |
|---|---|---|
| committer | Wei Liu <wei.liu@kernel.org> | 2022-02-07 17:55:30 +0000 |
| commit | 6bf625a4140f24b490766043b307f8252519578b (patch) | |
| tree | 2c7e6d3eb00d586d1d3ddd9b201895960d3d4480 /include | |
| parent | 8bc69f86328e87a0ffa79438430cc82f3aa6a194 (diff) | |
| download | linux-stable-6bf625a4140f24b490766043b307f8252519578b.tar.gz linux-stable-6bf625a4140f24b490766043b307f8252519578b.tar.bz2 linux-stable-6bf625a4140f24b490766043b307f8252519578b.zip | |
Drivers: hv: vmbus: Rework use of DMA_BIT_MASK(64)
Using DMA_BIT_MASK(64) as an initializer for a global variable
causes problems with Clang 12.0.1. The compiler doesn't understand
that value 64 is excluded from the shift at compile time, resulting
in a build error.
While this is a compiler problem, avoid the issue by setting up
the dma_mask memory as part of struct hv_device, and initialize
it using dma_set_mask().
Reported-by: Nathan Chancellor <nathan@kernel.org>
Reported-by: Vitaly Chikunov <vt@altlinux.org>
Reported-by: Jakub Kicinski <kuba@kernel.org>
Fixes: 743b237c3a7b ("scsi: storvsc: Add Isolation VM support for storvsc driver")
Signed-off-by: Michael Kelley <mikelley@microsoft.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Link: https://lore.kernel.org/r/1644176216-12531-1-git-send-email-mikelley@microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/hyperv.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index f565a8938836..fe2e0179ed51 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -1262,6 +1262,7 @@ struct hv_device { struct vmbus_channel *channel; struct kset *channels_kset; struct device_dma_parameters dma_parms; + u64 dma_mask; /* place holder to keep track of the dir for hv device in debugfs */ struct dentry *debug_dir; |