ARM/PCI: Remove unnecessary second application of align

Aligning res->start by align inside pcibios_align_resource() is unnecessary
because caller of pcibios_align_resource() is __find_resource_space() that
aligns res->start with align before calling pcibios_align_resource().

Aligning by align in case of IORESOURCE_IO && start & 0x300 cannot ever
result in changing start either because 0x300 bits would have not survived
the earlier alignment if align was large enough to have an impact.

Thus, remove the duplicated aligning from pcibios_align_resource().

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20260324165633.4583-5-ilpo.jarvinen@linux.intel.com

diff --git a/arch/arm/kernel/bios32.c b/arch/arm/kernel/bios32.c
index 5b9b4fcd0e54e47db4adf5939450f7bb68b9e477..cedb83a85dd982f0bf7fa5067be7a2f23bcb8961 100644 (file)
--- a/arch/arm/kernel/bios32.c
+++ b/arch/arm/kernel/bios32.c
@@ -571,8 +571,6 @@ resource_size_t pcibios_align_resource(void *data, const struct resource *res,
        if (res->flags & IORESOURCE_IO && start & 0x300)
                start = (start + 0x3ff) & ~0x3ff;
 
-       start = (start + align - 1) & ~(align - 1);
-
        host_bridge = pci_find_host_bridge(dev->bus);
 
        if (host_bridge->align_resource)