From e10c5cbd1c912c06d887c8a1980ac57e21d87b6f Mon Sep 17 00:00:00 2001 From: Lukas Wunner Date: Mon, 16 Dec 2024 20:18:41 +0100 Subject: [PATCH] PCI: Update code comment on PCI_EXP_LNKCAP_SLS for PCIe r3.0 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Niklas notes that the code comment on the PCI_EXP_LNKCAP_SLS macro is outdated as it reflects the meaning of the field prior to PCIe r3.0. Update it to avoid confusion. Closes: https://lore.kernel.org/r/70829798889c6d779ca0f6cd3260a765780d1369.camel@kernel.org Link: https://lore.kernel.org/r/6152bd17cbe0876365d5f4624fc317529f4bbc85.1734376438.git.lukas@wunner.de Reported-by: Niklas Schnelle Signed-off-by: Lukas Wunner Signed-off-by: Krzysztof Wilczyński Reviewed-by: Ilpo Järvinen Reviewed-by: Niklas Schnelle --- include/uapi/linux/pci_regs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h index 1601c7ed5fab7..02d0ba2999e04 100644 --- a/include/uapi/linux/pci_regs.h +++ b/include/uapi/linux/pci_regs.h @@ -533,7 +533,7 @@ #define PCI_EXP_DEVSTA_TRPND 0x0020 /* Transactions Pending */ #define PCI_CAP_EXP_RC_ENDPOINT_SIZEOF_V1 12 /* v1 endpoints without link end here */ #define PCI_EXP_LNKCAP 0x0c /* Link Capabilities */ -#define PCI_EXP_LNKCAP_SLS 0x0000000f /* Supported Link Speeds */ +#define PCI_EXP_LNKCAP_SLS 0x0000000f /* Max Link Speed (prior to PCIe r3.0: Supported Link Speeds) */ #define PCI_EXP_LNKCAP_SLS_2_5GB 0x00000001 /* LNKCAP2 SLS Vector bit 0 */ #define PCI_EXP_LNKCAP_SLS_5_0GB 0x00000002 /* LNKCAP2 SLS Vector bit 1 */ #define PCI_EXP_LNKCAP_SLS_8_0GB 0x00000003 /* LNKCAP2 SLS Vector bit 2 */