From 8d1580c4bb85723fa4bb2a22f7628a192a1a06f0 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Thu, 23 Apr 2015 11:31:54 +0000 Subject: brcm47xx: add patches for kernel 4.0 SVN-Revision: 45570 --- ...PCI-writes-setting-CardBus-bridge-resourc.patch | 35 ++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 target/linux/brcm47xx/patches-4.0/900-ssb-reject-PCI-writes-setting-CardBus-bridge-resourc.patch (limited to 'target/linux/brcm47xx/patches-4.0/900-ssb-reject-PCI-writes-setting-CardBus-bridge-resourc.patch') diff --git a/target/linux/brcm47xx/patches-4.0/900-ssb-reject-PCI-writes-setting-CardBus-bridge-resourc.patch b/target/linux/brcm47xx/patches-4.0/900-ssb-reject-PCI-writes-setting-CardBus-bridge-resourc.patch new file mode 100644 index 0000000000..e860acb22c --- /dev/null +++ b/target/linux/brcm47xx/patches-4.0/900-ssb-reject-PCI-writes-setting-CardBus-bridge-resourc.patch @@ -0,0 +1,35 @@ +From 5c81397a0147ea59c778d1de14ef54e2268221f6 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= +Date: Wed, 8 Apr 2015 06:58:11 +0200 +Subject: [PATCH] ssb: reject PCI writes setting CardBus bridge resources +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +If SoC has a CardBus we can set resources of device at slot 1 only. It's +impossigle to set bridge resources as it simply overwrites device 1 +configuration and usually results in Data bus error-s. + +Signed-off-by: Rafał Miłecki +--- + drivers/ssb/driver_pcicore.c | 4 ++++ + 1 file changed, 4 insertions(+) + +diff --git a/drivers/ssb/driver_pcicore.c b/drivers/ssb/driver_pcicore.c +index 15a7ee3..c603d19 100644 +--- a/drivers/ssb/driver_pcicore.c ++++ b/drivers/ssb/driver_pcicore.c +@@ -164,6 +164,10 @@ static int ssb_extpci_write_config(struct ssb_pcicore *pc, + SSB_WARN_ON(!pc->hostmode); + if (unlikely(len != 1 && len != 2 && len != 4)) + goto out; ++ /* CardBus SoCs allow configuring dev 1 resources only */ ++ if (extpci_core->cardbusmode && dev != 1 && ++ off >= PCI_BASE_ADDRESS_0 && off <= PCI_BASE_ADDRESS_5) ++ goto out; + addr = get_cfgspace_addr(pc, bus, dev, func, off); + if (unlikely(!addr)) + goto out; +-- +1.8.4.5 + -- cgit v1.2.3