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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2015-12-04 16:21:08 -0600 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2015-12-04 16:21:08 -0600 |
| commit | 7f52f31443ae9b2e6a71ec54cfc5a2c89006ea27 (patch) | |
| tree | e00588408eae2d9749a0d1cf374170f60f949ef8 /drivers/pci/host/pcie-altera.c | |
| parent | 3845d2953aacf00ad069806ba8d1495675069f23 (diff) | |
| download | blackbird-obmc-linux-7f52f31443ae9b2e6a71ec54cfc5a2c89006ea27.tar.gz blackbird-obmc-linux-7f52f31443ae9b2e6a71ec54cfc5a2c89006ea27.zip | |
PCI: altera: Fix loop in tlp_read_packet()
TLP_LOOP is 500 and the "loop" variable was a u8 so "loop < TLP_LOOP" is
always true. We only need this condition to work if there is a problem so
it would have been easy to miss this in testing.
Make it a normal for loop with "int i" instead of over thinking things and
making it complicated.
Fixes: 6bb4dd154ae8 ("PCI: altera: Add Altera PCIe host controller driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Ley Foon Tan <lftan@altera.com>
Diffstat (limited to 'drivers/pci/host/pcie-altera.c')
| -rw-r--r-- | drivers/pci/host/pcie-altera.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/pci/host/pcie-altera.c b/drivers/pci/host/pcie-altera.c index e5dda38bdde5..f0820d3fadf6 100644 --- a/drivers/pci/host/pcie-altera.c +++ b/drivers/pci/host/pcie-altera.c @@ -166,7 +166,7 @@ static bool altera_pcie_valid_config(struct altera_pcie *pcie, static int tlp_read_packet(struct altera_pcie *pcie, u32 *value) { - u8 loop; + int i; bool sop = 0; u32 ctrl; u32 reg0, reg1; @@ -175,7 +175,7 @@ static int tlp_read_packet(struct altera_pcie *pcie, u32 *value) * Minimum 2 loops to read TLP headers and 1 loop to read data * payload. */ - for (loop = 0; loop < TLP_LOOP; loop++) { + for (i = 0; i < TLP_LOOP; i++) { ctrl = cra_readl(pcie, RP_RXCPL_STATUS); if ((ctrl & RP_RXCPL_SOP) || (ctrl & RP_RXCPL_EOP) || sop) { reg0 = cra_readl(pcie, RP_RXCPL_REG0); |
