Re: [PATCH] PCI: altera: Fix TLP_CFG_DW0 for TLP write
From: Bjorn Helgaas <helgaas@kernel.org>
Date: 2017-02-28 21:38:05
Also in:
linux-pci, lkml
On Tue, Feb 28, 2017 at 06:37:16PM +0800, Ley Foon Tan wrote:
Commit eb5767122feba1 used the TLP_FMTTYPE_CFGRD* for TLP write operation and this cause writing to configuration space will fail. This patch fix it by using correct FMTTYPE for write operation. Signed-off-by: Ley Foon Tan <redacted> Cc: stable@vger.kernel.org
I really botched it with eb5767122feba1, didn't I? Thanks for cleaning up after me. I queued this to for-linus for v4.11-rc1.
quoted hunk ↗ jump to hunk
--- drivers/pci/host/pcie-altera.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-)diff --git a/drivers/pci/host/pcie-altera.c b/drivers/pci/host/pcie-altera.c index 0c15402..68c839f 100644 --- a/drivers/pci/host/pcie-altera.c +++ b/drivers/pci/host/pcie-altera.c@@ -57,10 +57,14 @@ #define TLP_WRITE_TAG 0x10 #define RP_DEVFN 0 #define TLP_REQ_ID(bus, devfn) (((bus) << 8) | (devfn)) -#define TLP_CFG_DW0(pcie, bus) \ +#define TLP_CFGRD_DW0(pcie, bus) \ ((((bus == pcie->root_bus_nr) ? TLP_FMTTYPE_CFGRD0 \ : TLP_FMTTYPE_CFGRD1) << 24) | \ TLP_PAYLOAD_SIZE) +#define TLP_CFGWR_DW0(pcie, bus) \ + ((((bus == pcie->root_bus_nr) ? TLP_FMTTYPE_CFGWR0 \ + : TLP_FMTTYPE_CFGWR1) << 24) | \ + TLP_PAYLOAD_SIZE) #define TLP_CFG_DW1(pcie, tag, be) \ (((TLP_REQ_ID(pcie->root_bus_nr, RP_DEVFN)) << 16) | (tag << 8) | (be)) #define TLP_CFG_DW2(bus, devfn, offset) \@@ -222,7 +226,7 @@ static int tlp_cfg_dword_read(struct altera_pcie *pcie, u8 bus, u32 devfn, { u32 headers[TLP_HDR_SIZE]; - headers[0] = TLP_CFG_DW0(pcie, bus); + headers[0] = TLP_CFGRD_DW0(pcie, bus); headers[1] = TLP_CFG_DW1(pcie, TLP_READ_TAG, byte_en); headers[2] = TLP_CFG_DW2(bus, devfn, where);@@ -237,7 +241,7 @@ static int tlp_cfg_dword_write(struct altera_pcie *pcie, u8 bus, u32 devfn, u32 headers[TLP_HDR_SIZE]; int ret; - headers[0] = TLP_CFG_DW0(pcie, bus); + headers[0] = TLP_CFGWR_DW0(pcie, bus); headers[1] = TLP_CFG_DW1(pcie, TLP_WRITE_TAG, byte_en); headers[2] = TLP_CFG_DW2(bus, devfn, where);-- 1.8.2.3