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MAX7301 GPIO: Reverting "Do not force SPI speed when using OF Platform"

PATCH In review Christophe Leroy 3 participants 4 messages Aug 20, 2013 – Aug 24, 2013 GPIO

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#0 lore raw

PATCH 1/1 MAX7301 GPIO: Reverting "Do not force SPI speed when using OF Platform"

This patch reverts commit 047b93a35961f7a6561e6f5dcb040738f822b892 which breaks MAX7301 GPIO driver because that commit was dependant on a rejected patch that was implementing selection of SPI speed from the Device Tree.

drivers/gpio/gpio-max7301.c +1 -2
@@ -56,8 +56,7 @@
 	int ret;
 
 	/* bits_per_word cannot be configured in platform data */
-	if (spi->dev.platform_data)
-		spi->bits_per_word = 16;
+	spi->bits_per_word = 16;
 	ret = spi_setup(spi);
 	if (ret < 0)
 		return ret;
Acked-by on v1 1/1
#1 lore raw
Quoted 5 lines · Christophe Leroy

This patch reverts commit 047b93a35961f7a6561e6f5dcb040738f822b892 which breaks MAX7301 GPIO driver because that commit was dependant on a rejected patch that was implementing selection of SPI speed from the Device Tree.

Good, thanks!

Quoted 14 lines
drivers/gpio/gpio-max7301.c +1 -2
@@ -56,8 +56,7 @@
 	int ret;
 
 	/* bits_per_word cannot be configured in platform data */
-	if (spi->dev.platform_data)
-		spi->bits_per_word = 16;
+	spi->bits_per_word = 16;
 	ret = spi_setup(spi);
 	if (ret < 0)
 		return ret;
#2 lore raw
In reply to Christophe Leroy
Quoted 5 lines · Christophe Leroy

This patch reverts commit 047b93a35961f7a6561e6f5dcb040738f822b892 which breaks MAX7301 GPIO driver because that commit was dependant on a rejected patch that was implementing selection of SPI speed from the Device Tree.

Patch applied with Roland's ACK.

But seriously, this is the kind of stuff that scares me a lot, when developers merge dependent patches into two different trees, that is just a recipe for chaos and me getting flamed by other kernel maintainers.

There is *no* mention of this dependency in the other commit.

Yours,
Linus Walleij

#3 lore raw
Quoted 10 lines · Linus Walleij
Quoted 5 lines · Christophe Leroy

This patch reverts commit 047b93a35961f7a6561e6f5dcb040738f822b892 which breaks MAX7301 GPIO driver because that commit was dependant on a rejected patch that was implementing selection of SPI speed from the Device Tree.

Patch applied with Roland's ACK.

Quoted 7 lines

But seriously, this is the kind of stuff that scares me a lot, when developers merge dependent patches into two different trees, that is just a recipe for chaos and me getting flamed by other kernel maintainers.

There is *no* mention of this dependency in the other commit.

I'm very sorry for this mishap. If I didn't mention it in the commit, this is because when I developped the change I submitted you a few months back, I was not aware of that other patch. It looks like it has been in my company's kernel tree for years, therefore in my mind it was a standard feature of the kernel. It looks like nobody had tried and submitted it for inclusion previously. That's thanks to Roland that I discovered it was indeed not a standard feature, then I tried to submit that patch a week ago and it was rejected by Stephen Warren for good reason.
For me it is a lesson learnt, and I'll make sure it doesn't happen again.

Regards
Christophe