From: Ilpo Järvinen ilpo.jarvinen@linux.intel.com
stable inclusion from stable-v6.6.3 commit 69319be69f13c4b758a0cde1cb6d77f3fde190b5 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8LBQP
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit 8bf7187d978610b9e327a3d92728c8864a575ebd ]
Use FIELD_GET() to extract PCIe Negotiated Link Width field instead of custom masking and shifting, and remove extract_width() which only wraps that FIELD_GET().
Signed-off-by: Ilpo Järvinen ilpo.jarvinen@linux.intel.com Link: https://lore.kernel.org/r/20230919125648.1920-2-ilpo.jarvinen@linux.intel.co... Reviewed-by: Jonathan Cameron Jonathan.Cameron@huawei.com Reviewed-by: Dean Luick dean.luick@cornelisnetworks.com Signed-off-by: Leon Romanovsky leon@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- drivers/infiniband/hw/hfi1/pcie.c | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-)
diff --git a/drivers/infiniband/hw/hfi1/pcie.c b/drivers/infiniband/hw/hfi1/pcie.c index 08732e1ac966..c132a9c073bf 100644 --- a/drivers/infiniband/hw/hfi1/pcie.c +++ b/drivers/infiniband/hw/hfi1/pcie.c @@ -3,6 +3,7 @@ * Copyright(c) 2015 - 2019 Intel Corporation. */
+#include <linux/bitfield.h> #include <linux/pci.h> #include <linux/io.h> #include <linux/delay.h> @@ -210,12 +211,6 @@ static u32 extract_speed(u16 linkstat) return speed; }
-/* return the PCIe link speed from the given link status */ -static u32 extract_width(u16 linkstat) -{ - return (linkstat & PCI_EXP_LNKSTA_NLW) >> PCI_EXP_LNKSTA_NLW_SHIFT; -} - /* read the link status and set dd->{lbus_width,lbus_speed,lbus_info} */ static void update_lbus_info(struct hfi1_devdata *dd) { @@ -228,7 +223,7 @@ static void update_lbus_info(struct hfi1_devdata *dd) return; }
- dd->lbus_width = extract_width(linkstat); + dd->lbus_width = FIELD_GET(PCI_EXP_LNKSTA_NLW, linkstat); dd->lbus_speed = extract_speed(linkstat); snprintf(dd->lbus_info, sizeof(dd->lbus_info), "PCIe,%uMHz,x%u", dd->lbus_speed, dd->lbus_width);