diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0461-PCI-brcmstb-Fix-build-on-32bit-ARM-platforms-with-ol.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0461-PCI-brcmstb-Fix-build-on-32bit-ARM-platforms-with-ol.patch | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0461-PCI-brcmstb-Fix-build-on-32bit-ARM-platforms-with-ol.patch b/target/linux/bcm27xx/patches-5.4/950-0461-PCI-brcmstb-Fix-build-on-32bit-ARM-platforms-with-ol.patch new file mode 100644 index 0000000000..6bb45ccb1f --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0461-PCI-brcmstb-Fix-build-on-32bit-ARM-platforms-with-ol.patch @@ -0,0 +1,38 @@ +From 39192141aa16809323c24d8910e3a63488f7f55d Mon Sep 17 00:00:00 2001 +From: Marek Szyprowski <m.szyprowski@samsung.com> +Date: Thu, 27 Feb 2020 12:51:46 +0100 +Subject: [PATCH] PCI: brcmstb: Fix build on 32bit ARM platforms with + older compilers + +commit 73a7a271b3eee7b83f29b13866163776f1cbef89 upstream. + +Some older compilers have no implementation for the helper for 64-bit +unsigned division/modulo, so linking pcie-brcmstb driver causes the +"undefined reference to `__aeabi_uldivmod'" error. + +*rc_bar2_size is always a power of two, because it is calculated as: +"1ULL << fls64(entry->res->end - entry->res->start)", so the modulo +operation in the subsequent check can be replaced by a simple logical +AND with a proper mask. + +Link: https://lore.kernel.org/r/20200227115146.24515-1-m.szyprowski@samsung.com +Fixes: c0452137034b ("PCI: brcmstb: Add Broadcom STB PCIe host controller driver") +Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> +Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> +Acked-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> +Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> +--- + drivers/pci/controller/pcie-brcmstb.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +--- a/drivers/pci/controller/pcie-brcmstb.c ++++ b/drivers/pci/controller/pcie-brcmstb.c +@@ -670,7 +670,7 @@ static inline int brcm_pcie_get_rc_bar2_ + * outbound memory @ 3GB). So instead it will start at the 1x + * multiple of its size + */ +- if (!*rc_bar2_size || *rc_bar2_offset % *rc_bar2_size || ++ if (!*rc_bar2_size || (*rc_bar2_offset & (*rc_bar2_size - 1)) || + (*rc_bar2_offset < SZ_4G && *rc_bar2_offset > SZ_2G)) { + dev_err(dev, "Invalid rc_bar2_offset/size: size 0x%llx, off 0x%llx\n", + *rc_bar2_size, *rc_bar2_offset); |