The patch titled
Subject: virtio: pci: constify ioreadX() iomem argument (as in generic implementation)
has been added to the -mm tree. Its filename is
virtio-pci-constify-ioreadx-iomem-argument-as-in-generic-implementation.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/virtio-pci-constify-ioreadx-iomem-argument-as-in-generic-implementation.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/virtio-pci-constify-ioreadx-iomem-argument-as-in-generic-implementation.patch
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------------------------------------------------------
From: Krzysztof Kozlowski <krzk@xxxxxxxxxx>
Subject: virtio: pci: constify ioreadX() iomem argument (as in generic implementation)
The ioreadX() helpers have inconsistent interface. On some architectures
void *__iomem address argument is a pointer to const, on some not.
Implementations of ioreadX() do not modify the memory under the address so
they can be converted to a "const" version for const-safety and
consistency among architectures.
Link: http://lkml.kernel.org/r/20200709072837.5869-5-krzk@xxxxxxxxxx
Signed-off-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx>
Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Cc: Allen Hubbe <allenbh@xxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Cc: Dave Jiang <dave.jiang@xxxxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Cc: Helge Deller <deller@xxxxxx>
Cc: Ivan Kokshaysky <ink@xxxxxxxxxxxxxxxxxxxx>
Cc: Jakub Kicinski <kuba@xxxxxxxxxx>
Cc: "James E.J. Bottomley" <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx>
Cc: Jason Wang <jasowang@xxxxxxxxxx>
Cc: Jon Mason <jdmason@xxxxxxxx>
Cc: Kalle Valo <kvalo@xxxxxxxxxxxxxx>
Cc: Matt Turner <mattst88@xxxxxxxxx>
Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Cc: "Michael S. Tsirkin" <mst@xxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Richard Henderson <rth@xxxxxxxxxxx>
Cc: Rich Felker <dalias@xxxxxxxx>
Cc: Yoshinori Sato <ysato@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/virtio/virtio_pci_modern.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
--- a/drivers/virtio/virtio_pci_modern.c~virtio-pci-constify-ioreadx-iomem-argument-as-in-generic-implementation
+++ a/drivers/virtio/virtio_pci_modern.c
@@ -27,16 +27,16 @@
* method, i.e. 32-bit accesses for 32-bit fields, 16-bit accesses
* for 16-bit fields and 8-bit accesses for 8-bit fields.
*/
-static inline u8 vp_ioread8(u8 __iomem *addr)
+static inline u8 vp_ioread8(const u8 __iomem *addr)
{
return ioread8(addr);
}
-static inline u16 vp_ioread16 (__le16 __iomem *addr)
+static inline u16 vp_ioread16 (const __le16 __iomem *addr)
{
return ioread16(addr);
}
-static inline u32 vp_ioread32(__le32 __iomem *addr)
+static inline u32 vp_ioread32(const __le32 __iomem *addr)
{
return ioread32(addr);
}
_
Patches currently in -mm which might be from krzk@xxxxxxxxxx are
iomap-constify-ioreadx-iomem-argument-as-in-generic-implementation.patch
rtl818x-constify-ioreadx-iomem-argument-as-in-generic-implementation.patch
ntb-intel-constify-ioreadx-iomem-argument-as-in-generic-implementation.patch
virtio-pci-constify-ioreadx-iomem-argument-as-in-generic-implementation.patch
