From 723a2cc8d69d4342b47dfddbfe6c19f1b135f09b Mon Sep 17 00:00:00 2001 From: Jason Gunthorpe Date: Fri, 16 Feb 2024 20:48:14 -0400 Subject: s390: use the correct count for __iowrite64_copy() 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 Signed-off-by: Jason Gunthorpe Link: https://lore.kernel.org/r/0-v1-9223d11a7662+1d7785-s390_iowrite64_jgg@nvidia.com Signed-off-by: Heiko Carstens --- arch/s390/pci/pci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/s390') diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c index 676ac74026a8..52a44e353796 100644 --- a/arch/s390/pci/pci.c +++ b/arch/s390/pci/pci.c @@ -252,7 +252,7 @@ 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, -- cgit v1.2.3