Linux-Amlogic Archive on lore.kernel.org
 help / color / Atom feed
* [PATCH AUTOSEL 4.9 138/251] pwm: meson: Don't disable PWM when setting duty repeatedly
       [not found] <20200116173641.22137-1-sashal@kernel.org>
@ 2020-01-16 17:34 ` Sasha Levin
  2020-01-16 17:35 ` [PATCH AUTOSEL 4.9 205/251] net: stmmac: dwmac-meson8b: Fix signedness bug in probe Sasha Levin
  1 sibling, 0 replies; 2+ messages in thread
From: Sasha Levin @ 2020-01-16 17:34 UTC (permalink / raw)
  To: linux-kernel, stable
  Cc: Sasha Levin, linux-pwm, Neil Armstrong, Martin Blumenstingl,
	Bichao Zheng, Thierry Reding, linux-amlogic, linux-arm-kernel

From: Bichao Zheng <bichao.zheng@amlogic.com>

[ Upstream commit a279345807e1e0ae79567a52cfdd9d30c9174a3c ]

There is an abnormally low about 20ms,when setting duty repeatedly.
Because setting the duty will disable PWM and then enable. Delete
this operation now.

Fixes: 211ed630753d2f ("pwm: Add support for Meson PWM Controller")
Signed-off-by: Bichao Zheng <bichao.zheng@amlogic.com>
[ Dropped code instead of hiding it behind a comment ]
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/pwm/pwm-meson.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/drivers/pwm/pwm-meson.c b/drivers/pwm/pwm-meson.c
index f58a4867b519..a196439ee14c 100644
--- a/drivers/pwm/pwm-meson.c
+++ b/drivers/pwm/pwm-meson.c
@@ -320,11 +320,6 @@ static int meson_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
 	if (state->period != channel->state.period ||
 	    state->duty_cycle != channel->state.duty_cycle ||
 	    state->polarity != channel->state.polarity) {
-		if (channel->state.enabled) {
-			meson_pwm_disable(meson, pwm->hwpwm);
-			channel->state.enabled = false;
-		}
-
 		if (state->polarity != channel->state.polarity) {
 			if (state->polarity == PWM_POLARITY_NORMAL)
 				meson->inverter_mask |= BIT(pwm->hwpwm);
-- 
2.20.1


_______________________________________________
linux-amlogic mailing list
linux-amlogic@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-amlogic

^ permalink raw reply	[flat|nested] 2+ messages in thread

* [PATCH AUTOSEL 4.9 205/251] net: stmmac: dwmac-meson8b: Fix signedness bug in probe
       [not found] <20200116173641.22137-1-sashal@kernel.org>
  2020-01-16 17:34 ` [PATCH AUTOSEL 4.9 138/251] pwm: meson: Don't disable PWM when setting duty repeatedly Sasha Levin
@ 2020-01-16 17:35 ` Sasha Levin
  1 sibling, 0 replies; 2+ messages in thread
From: Sasha Levin @ 2020-01-16 17:35 UTC (permalink / raw)
  To: linux-kernel, stable
  Cc: Sasha Levin, Martin Blumenstingl, netdev, linux-stm32,
	Dan Carpenter, linux-amlogic, David S . Miller, linux-arm-kernel

From: Dan Carpenter <dan.carpenter@oracle.com>

[ Upstream commit f10210517a2f37feea2edf85eb34c98977265c16 ]

The "dwmac->phy_mode" is an enum and in this context GCC treats it as
an unsigned int so the error handling is never triggered.

Fixes: 566e82516253 ("net: stmmac: add a glue driver for the Amlogic Meson 8b / GXBB DWMAC")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c
index f356a44bcb81..6704d3e0392d 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c
@@ -280,7 +280,7 @@ static int meson8b_dwmac_probe(struct platform_device *pdev)
 
 	dwmac->pdev = pdev;
 	dwmac->phy_mode = of_get_phy_mode(pdev->dev.of_node);
-	if (dwmac->phy_mode < 0) {
+	if ((int)dwmac->phy_mode < 0) {
 		dev_err(&pdev->dev, "missing phy-mode property\n");
 		ret = -EINVAL;
 		goto err_remove_config_dt;
-- 
2.20.1


_______________________________________________
linux-amlogic mailing list
linux-amlogic@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-amlogic

^ permalink raw reply	[flat|nested] 2+ messages in thread

end of thread, back to index

Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
     [not found] <20200116173641.22137-1-sashal@kernel.org>
2020-01-16 17:34 ` [PATCH AUTOSEL 4.9 138/251] pwm: meson: Don't disable PWM when setting duty repeatedly Sasha Levin
2020-01-16 17:35 ` [PATCH AUTOSEL 4.9 205/251] net: stmmac: dwmac-meson8b: Fix signedness bug in probe Sasha Levin

Linux-Amlogic Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-amlogic/0 linux-amlogic/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-amlogic linux-amlogic/ https://lore.kernel.org/linux-amlogic \
		linux-amlogic@lists.infradead.org
	public-inbox-index linux-amlogic

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.infradead.lists.linux-amlogic


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git