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| author | Jason Gunthorpe <jgg@nvidia.com> | 2024-02-17 03:48:14 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-03-01 15:16:50 +0300 |
| commit | 5d4e4eff791dd88267674284f0a5a4557ee96416 (patch) | |
| tree | ffa4925679024e18fc76acab0c6e84ef5849a355 /arch | |
| parent | f6ce90567ed373b6be96a033fda73cd769f5c748 (diff) | |
| download | linux-5d4e4eff791dd88267674284f0a5a4557ee96416.tar.xz | |
s390: use the correct count for __iowrite64_copy()
[ Upstream commit 723a2cc8d69d4342b47dfddbfe6c19f1b135f09b ]
The signature for __iowrite64_copy() requires the number of 64 bit
quantities, not bytes. Multiple by 8 to get to a byte length before
invoking zpci_memcpy_toio()
Fixes: 87bc359b9822 ("s390/pci: speed up __iowrite64_copy by using pci store block insn")
Acked-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/0-v1-9223d11a7662+1d7785-s390_iowrite64_jgg@nvidia.com
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/s390/pci/pci.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c index 74799439b259..beecc36c3027 100644 --- a/arch/s390/pci/pci.c +++ b/arch/s390/pci/pci.c @@ -225,7 +225,7 @@ resource_size_t pcibios_align_resource(void *data, const struct resource *res, /* combine single writes by using store-block insn */ void __iowrite64_copy(void __iomem *to, const void *from, size_t count) { - zpci_memcpy_toio(to, from, count); + zpci_memcpy_toio(to, from, count * 8); } static void __iomem *__ioremap(phys_addr_t addr, size_t size, pgprot_t prot) |