linux-kernel - [PATCH 1/1] PCI/IDE: Fix reading a wrong reg for unused sel stream initialization

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Message-Id: <20260111073823.486665-1-ming.li@zohomail.com>
Date: Sun, 11 Jan 2026 15:38:23 +0800
From: Li Ming <ming.li@...omail.com>
To: dan.j.williams@...el.com
Cc: linux-pci@...r.kernel.org,
	linux-coco@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	Li Ming <ming.li@...omail.com>
Subject: [PATCH 1/1] PCI/IDE: Fix reading a wrong reg for unused sel stream initialization

During pci_ide_init(), it will write PCI_ID_RESERVED_STREAM_ID into all
unused selective IDE stream blocks. In a selective IDE stream block, IDE
stream ID field is in selective IDE stream control register instead of
selective IDE stream capability register.

Fixes: 079115370d00 ("PCI/IDE: Initialize an ID for all IDE streams")
Signed-off-by: Li Ming <ming.li@...omail.com>
---
 drivers/pci/ide.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pci/ide.c b/drivers/pci/ide.c
index f0ef474e1a0d..26f7cc94ec31 100644
--- a/drivers/pci/ide.c
+++ b/drivers/pci/ide.c
@@ -168,7 +168,7 @@ void pci_ide_init(struct pci_dev *pdev)
 	for (u16 i = 0; i < nr_streams; i++) {
 		int pos = __sel_ide_offset(ide_cap, nr_link_ide, i, nr_ide_mem);
 
-		pci_read_config_dword(pdev, pos + PCI_IDE_SEL_CAP, &val);
+		pci_read_config_dword(pdev, pos + PCI_IDE_SEL_CTL, &val);
 		if (val & PCI_IDE_SEL_CTL_EN)
 			continue;
 		val &= ~PCI_IDE_SEL_CTL_ID;
-- 
2.34.1