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| author | Gustavo Pimentel <Gustavo.Pimentel@synopsys.com> | 2019-06-04 18:24:43 +0200 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2019-06-13 16:49:45 -0500 |
| commit | de76cda215d56256ffcda7ffa538b70f9fb301a7 (patch) | |
| tree | 69c7e1015e6799e7bcb8cccbc711949ad4fc3392 /drivers/pci/slot.c | |
| parent | 2d2f4273cbe9058d1f5a518e5e880d27d7b3b30f (diff) | |
| download | linux-de76cda215d56256ffcda7ffa538b70f9fb301a7.tar.bz2 | |
PCI: Decode PCIe 32 GT/s link speed
PCIe r5.0, sec 7.5.3.18, defines a new 32.0 GT/s bit in the Supported Link
Speeds Vector of Link Capabilities 2. Decode this new speed. This does
not affect the speed of the link, which should be negotiated automatically
by the hardware; it only adds decoding when showing the speed to the user.
Previously, reading the speed of a link operating at this speed showed
"Unknown speed" instead of "32.0 GT/s".
Link: https://lore.kernel.org/lkml/92365e3caf0fc559f9ab14bcd053bfc92d4f661c.1559664969.git.gustavo.pimentel@synopsys.com
Signed-off-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
[bhelgaas: changelog]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci/slot.c')
| -rw-r--r-- | drivers/pci/slot.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/pci/slot.c b/drivers/pci/slot.c index f4d92b1afe7b..ae4aa0e1f2f4 100644 --- a/drivers/pci/slot.c +++ b/drivers/pci/slot.c @@ -75,6 +75,7 @@ static const char *pci_bus_speed_strings[] = { "5.0 GT/s PCIe", /* 0x15 */ "8.0 GT/s PCIe", /* 0x16 */ "16.0 GT/s PCIe", /* 0x17 */ + "32.0 GT/s PCIe", /* 0x18 */ }; static ssize_t bus_speed_read(enum pci_bus_speed speed, char *buf) |