From: Julian Braha <julianbraha@gmail.com>
To: bhelgaas@google.com, robh@kernel.org
Cc: linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org,
Julian Braha <julianbraha@gmail.com>
Subject: [PATCH] pci: dead code cleanup in Kconfig
Date: Mon, 30 Mar 2026 22:45:49 +0100 [thread overview]
Message-ID: <20260330214549.16157-1-julianbraha@gmail.com> (raw)
There is already an 'if PCI' condition wrapping several config options
e.g. PCI_DOMAINS and VGA_ARB, making the 'depends on PCI' statement for
each of these a duplicate dependency (dead code).
I propose leaving the outer 'if PCI...endif' and removing the individual
'depends on PCI' statement from each option.
This dead code was found by kconfirm, a static analysis tool for Kconfig.
Signed-off-by: Julian Braha <julianbraha@gmail.com>
---
drivers/pci/Kconfig | 12 +++---------
1 file changed, 3 insertions(+), 9 deletions(-)
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index e3f848ffb52a..33c88432b728 100644
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig
@@ -31,7 +31,6 @@ if PCI
config PCI_DOMAINS
bool
- depends on PCI
config PCI_DOMAINS_GENERIC
bool
@@ -255,7 +254,7 @@ config PCI_DYNAMIC_OF_NODES
choice
prompt "PCI Express hierarchy optimization setting"
default PCIE_BUS_DEFAULT
- depends on PCI && EXPERT
+ depends on EXPERT
help
MPS (Max Payload Size) and MRRS (Max Read Request Size) are PCIe
device parameters that affect performance and the ability to
@@ -272,20 +271,17 @@ choice
config PCIE_BUS_TUNE_OFF
bool "Tune Off"
- depends on PCI
help
Use the BIOS defaults; don't touch MPS at all. This is the same
as booting with 'pci=pcie_bus_tune_off'.
config PCIE_BUS_DEFAULT
bool "Default"
- depends on PCI
help
Default choice; ensure that the MPS matches upstream bridge.
config PCIE_BUS_SAFE
bool "Safe"
- depends on PCI
help
Use largest MPS that boot-time devices support. If you have a
closed system with no possibility of adding new devices, this
@@ -294,7 +290,6 @@ config PCIE_BUS_SAFE
config PCIE_BUS_PERFORMANCE
bool "Performance"
- depends on PCI
help
Use MPS and MRRS for best performance. Ensure that a given
device's MPS is no larger than its parent MPS, which allows us to
@@ -303,7 +298,6 @@ config PCIE_BUS_PERFORMANCE
config PCIE_BUS_PEER2PEER
bool "Peer2peer"
- depends on PCI
help
Set MPS = 128 for all devices. MPS configuration effected by the
other options could cause the MPS on one root port to be
@@ -317,7 +311,7 @@ endchoice
config VGA_ARB
bool "VGA Arbitration" if EXPERT
default y
- depends on (PCI && !S390)
+ depends on !S390
select SCREEN_INFO if X86
help
Some "legacy" VGA devices implemented on PCI typically have the same
@@ -340,4 +334,4 @@ source "drivers/pci/endpoint/Kconfig"
source "drivers/pci/switch/Kconfig"
source "drivers/pci/pwrctrl/Kconfig"
-endif
+endif # PCI
--
2.51.2
next reply other threads:[~2026-03-30 21:45 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-30 21:45 Julian Braha [this message]
2026-03-30 22:25 ` [PATCH] pci: dead code cleanup in Kconfig Bjorn Helgaas
2026-03-31 19:16 ` Bjorn Helgaas
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