From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: "Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
stable@vger.kernel.org,
"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>,
"Bartosz Golaszewski" <brgl@bgdev.pl>,
"Sasha Levin" <sashal@kernel.org>
Subject: [PATCH 4.14 25/33] gpio: mvebu/pwm: Refuse requests with inverted polarity
Date: Mon, 23 May 2022 19:05:14 +0200 [thread overview]
Message-ID: <20220523165752.546367189@linuxfoundation.org> (raw)
In-Reply-To: <20220523165746.957506211@linuxfoundation.org>
From: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
[ Upstream commit 3ecb10175b1f776f076553c24e2689e42953fef5 ]
The driver doesn't take struct pwm_state::polarity into account when
configuring the hardware, so refuse requests for inverted polarity.
Fixes: 757642f9a584 ("gpio: mvebu: Add limited PWM support")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpio/gpio-mvebu.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpio/gpio-mvebu.c b/drivers/gpio/gpio-mvebu.c
index b14d481ab7db..cbad11029c67 100644
--- a/drivers/gpio/gpio-mvebu.c
+++ b/drivers/gpio/gpio-mvebu.c
@@ -694,6 +694,9 @@ static int mvebu_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
unsigned long flags;
unsigned int on, off;
+ if (state->polarity != PWM_POLARITY_NORMAL)
+ return -EINVAL;
+
val = (unsigned long long) mvpwm->clk_rate * state->duty_cycle;
do_div(val, NSEC_PER_SEC);
if (val > UINT_MAX)
--
2.35.1
next prev parent reply other threads:[~2022-05-23 17:12 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-23 17:04 [PATCH 4.14 00/33] 4.14.281-rc1 review Greg Kroah-Hartman
2022-05-23 17:04 ` [PATCH 4.14 01/33] floppy: use a statically allocated error counter Greg Kroah-Hartman
2022-05-23 17:04 ` [PATCH 4.14 02/33] um: Cleanup syscall_handler_t definition/cast, fix warning Greg Kroah-Hartman
2022-05-23 17:04 ` [PATCH 4.14 03/33] Input: add bounds checking to input_set_capability() Greg Kroah-Hartman
2022-05-23 17:04 ` [PATCH 4.14 04/33] Input: stmfts - fix reference leak in stmfts_input_open Greg Kroah-Hartman
2022-05-25 10:52 ` Pavel Machek
2022-05-25 18:04 ` Dmitry Torokhov
2022-05-30 10:28 ` Pavel Machek
2022-05-23 17:04 ` [PATCH 4.14 05/33] MIPS: lantiq: check the return value of kzalloc() Greg Kroah-Hartman
2022-05-23 17:04 ` [PATCH 4.14 06/33] drbd: remove usage of list iterator variable after loop Greg Kroah-Hartman
2022-05-23 17:04 ` [PATCH 4.14 07/33] ARM: 9191/1: arm/stacktrace, kasan: Silence KASAN warnings in unwind_frame() Greg Kroah-Hartman
2022-05-23 17:04 ` [PATCH 4.14 08/33] ALSA: wavefront: Proper check of get_user() error Greg Kroah-Hartman
2022-05-23 17:04 ` [PATCH 4.14 09/33] perf: Fix sys_perf_event_open() race against self Greg Kroah-Hartman
2022-05-23 17:04 ` [PATCH 4.14 10/33] drm/dp/mst: fix a possible memory leak in fetch_monitor_name() Greg Kroah-Hartman
2022-05-23 17:05 ` [PATCH 4.14 11/33] mmc: core: Specify timeouts for BKOPS and CACHE_FLUSH for eMMC Greg Kroah-Hartman
2022-05-23 17:05 ` [PATCH 4.14 12/33] mmc: block: Use generic_cmd6_time when modifying INAND_CMD38_ARG_EXT_CSD Greg Kroah-Hartman
2022-05-23 17:05 ` [PATCH 4.14 13/33] mmc: core: Default to generic_cmd6_time as timeout in __mmc_switch() Greg Kroah-Hartman
2022-05-23 17:05 ` [PATCH 4.14 14/33] net: vmxnet3: fix possible use-after-free bugs in vmxnet3_rq_alloc_rx_buf() Greg Kroah-Hartman
2022-05-23 17:05 ` [PATCH 4.14 15/33] net: vmxnet3: fix possible NULL pointer dereference in vmxnet3_rq_cleanup() Greg Kroah-Hartman
2022-05-23 17:05 ` [PATCH 4.14 16/33] clk: at91: generated: consider range when calculating best rate Greg Kroah-Hartman
2022-05-23 17:05 ` [PATCH 4.14 17/33] net/qla3xxx: Fix a test in ql_reset_work() Greg Kroah-Hartman
2022-05-23 17:05 ` [PATCH 4.14 18/33] NFC: nci: fix sleep in atomic context bugs caused by nci_skb_alloc Greg Kroah-Hartman
2022-05-23 17:05 ` [PATCH 4.14 19/33] net: af_key: add check for pfkey_broadcast in function pfkey_process Greg Kroah-Hartman
2022-05-23 17:05 ` [PATCH 4.14 20/33] ARM: 9196/1: spectre-bhb: enable for Cortex-A15 Greg Kroah-Hartman
2022-05-23 17:05 ` [PATCH 4.14 21/33] ARM: 9197/1: spectre-bhb: fix loop8 sequence for Thumb2 Greg Kroah-Hartman
2022-05-23 17:05 ` [PATCH 4.14 22/33] igb: skip phy status check where unavailable Greg Kroah-Hartman
2022-05-23 17:05 ` [PATCH 4.14 23/33] net: bridge: Clear offload_fwd_mark when passing frame up bridge interface Greg Kroah-Hartman
2022-05-23 17:05 ` [PATCH 4.14 24/33] gpio: gpio-vf610: do not touch other bits when set the target bit Greg Kroah-Hartman
2022-05-23 17:05 ` Greg Kroah-Hartman [this message]
2022-05-23 17:05 ` [PATCH 4.14 26/33] perf bench numa: Address compiler error on s390 Greg Kroah-Hartman
2022-05-23 17:05 ` [PATCH 4.14 27/33] scsi: qla2xxx: Fix missed DMA unmap for aborted commands Greg Kroah-Hartman
2022-05-23 17:05 ` [PATCH 4.14 28/33] mac80211: fix rx reordering with non explicit / psmp ack policy Greg Kroah-Hartman
2022-05-23 17:05 ` [PATCH 4.14 29/33] ethernet: tulip: fix missing pci_disable_device() on error in tulip_init_one() Greg Kroah-Hartman
2022-05-23 17:05 ` [PATCH 4.14 30/33] net: stmmac: fix missing pci_disable_device() on error in stmmac_pci_probe() Greg Kroah-Hartman
2022-05-23 17:05 ` [PATCH 4.14 31/33] net: atlantic: verify hw_head_ lies within TX buffer ring Greg Kroah-Hartman
2022-05-23 17:05 ` [PATCH 4.14 32/33] swiotlb: fix info leak with DMA_FROM_DEVICE Greg Kroah-Hartman
2022-05-24 12:37 ` [PATCH 4.14 00/33] 4.14.281-rc1 review Naresh Kamboju
2022-05-24 20:01 ` Guenter Roeck
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