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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 15:35:08 +0300 |
| commit | ef6566d10cf760190c705ea5c45c5a98c449fb85 (patch) | |
| tree | a3f12e8e4d20696a7a616eabcf0782957da0d7a6 /arch/s390 | |
| parent | 0a32395fd1e3f12e7bc6f0e21bead374d107b2a5 (diff) | |
| download | linux-ef6566d10cf760190c705ea5c45c5a98c449fb85.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/s390')
| -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 d34d5813d006..777362cb4ea8 100644 --- a/arch/s390/pci/pci.c +++ b/arch/s390/pci/pci.c @@ -241,7 +241,7 @@ 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); } void __iomem *ioremap_prot(phys_addr_t phys_addr, size_t size, |