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Message-Id: <20170718101730.2541-1-jonas.gorski@gmail.com>
Date: Tue, 18 Jul 2017 12:17:21 +0200
From: Jonas Gorski <jonas.gorski@...il.com>
To: unlisted-recipients:; (no To-header on input)
Cc: adi-buildroot-devel@...ts.sourceforge.net,
bcm-kernel-feedback-list@...adcom.com,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
linux-m68k@...ts.linux-m68k.org, linux-mips@...ux-mips.org
Subject: [PATCH 0/9] make clk_get_rate implementations behavior more consistent
The common clock and several other clock API implementations allow
calling clk_get_rate with a NULL pointer. While not specified as
expected behavior of the API, device drivers have come to rely on that,
causing them to OOPS when run on a platform with a different clock API
implementation.
Fix this by making sure all clk_get_rate implementations handle
NULL clocks instead of OOPSing.
While some custom implementations even allow ERR_PTR()s, I decided
against that as IIRC the usual idea is that errors should be handled and
not silently carried over.
Cc: adi-buildroot-devel@...ts.sourceforge.net
Cc: bcm-kernel-feedback-list@...adcom.com
Cc: linux-arm-kernel@...ts.infradead.org
Cc: linux-kernel@...r.kernel.org
Cc: linux-m68k@...ts.linux-m68k.org
Cc: linux-mips@...ux-mips.org
Jonas Gorski (9):
ARM: ep93xx: allow NULL clock for clk_get_rate
ARM: mmp: allow NULL clock for clk_get_rate
blackfin: bf609: allow NULL clock for clk_get_rate
m68k: allow NULL clock for clk_get_rate
MIPS: AR7: allow NULL clock for clk_get_rate
MIPS: BCM63XX: allow NULL clock for clk_get_rate
MIPS: Loongson 2F: allow NULL clock for clk_get_rate
MIPS: ralink: allow NULL clock for clk_get_rate
unicore32: allow NULL clock for clk_get_rate
arch/arm/mach-ep93xx/clock.c | 3 +++
arch/arm/mach-mmp/clock.c | 4 +++-
arch/blackfin/mach-bf609/clock.c | 2 +-
arch/m68k/coldfire/clk.c | 3 +++
arch/mips/ar7/clock.c | 3 +++
arch/mips/bcm63xx/clk.c | 3 +++
arch/mips/loongson64/lemote-2f/clock.c | 3 +++
arch/mips/ralink/clk.c | 3 +++
arch/unicore32/kernel/clock.c | 3 +++
9 files changed, 25 insertions(+), 2 deletions(-)
--
2.11.0
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