Fixes for Tegra Jetson TX1/TX2 series via max77620

1 files changed, 183 insertions, 0 deletions

diff --git a/mfd-max77620-Do-not-allocate-IRQs-upfront.patch b/mfd-max77620-Do-not-allocate-IRQs-upfront.patch
new file mode 100644
index 000000000..0b4820ad7
--- /dev/null
+++ b/mfd-max77620-Do-not-allocate-IRQs-upfront.patch
@@ -0,0 +1,183 @@
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+From: Thierry Reding <thierry.reding@gmail.com>
+To: Lee Jones <lee.jones@linaro.org>
+Subject: [PATCH] mfd: max77620: Do not allocate IRQs upfront
+Date: Wed,  2 Oct 2019 16:43:18 +0200
+Message-Id: <20191002144318.140365-1-thierry.reding@gmail.com>
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+From: Thierry Reding <treding@nvidia.com>
+
+regmap_add_irq_chip() will try to allocate all of the IRQ descriptors
+upfront if passed a non-zero irq_base parameter. However, the intention
+is to allocate IRQ descriptors on an as-needed basis if possible. Pass 0
+instead of -1 to fix that use-case.
+
+Signed-off-by: Thierry Reding <treding@nvidia.com>
+---
+ drivers/mfd/max77620.c       | 5 ++---
+ include/linux/mfd/max77620.h | 1 -
+ 2 files changed, 2 insertions(+), 4 deletions(-)
+
+diff --git a/drivers/mfd/max77620.c b/drivers/mfd/max77620.c
+index a851ff473a44..c7ed5c353553 100644
+--- a/drivers/mfd/max77620.c
++++ b/drivers/mfd/max77620.c
+@@ -507,7 +507,6 @@ static int max77620_probe(struct i2c_client *client,
+ 
+ 	i2c_set_clientdata(client, chip);
+ 	chip->dev = &client->dev;
+-	chip->irq_base = -1;
+ 	chip->chip_irq = client->irq;
+ 	chip->chip_id = (enum max77620_chip_id)id->driver_data;
+ 
+@@ -545,8 +544,8 @@ static int max77620_probe(struct i2c_client *client,
+ 
+ 	max77620_top_irq_chip.irq_drv_data = chip;
+ 	ret = devm_regmap_add_irq_chip(chip->dev, chip->rmap, client->irq,
+-				       IRQF_ONESHOT | IRQF_SHARED,
+-				       chip->irq_base, &max77620_top_irq_chip,
++				       IRQF_ONESHOT | IRQF_SHARED, 0,
++				       &max77620_top_irq_chip,
+ 				       &chip->top_irq_data);
+ 	if (ret < 0) {
+ 		dev_err(chip->dev, "Failed to add regmap irq: %d\n", ret);
+diff --git a/include/linux/mfd/max77620.h b/include/linux/mfd/max77620.h
+index 12ba157cb83f..f552ef5b1100 100644
+--- a/include/linux/mfd/max77620.h
++++ b/include/linux/mfd/max77620.h
+@@ -329,7 +329,6 @@ struct max77620_chip {
+ 	struct regmap *rmap;
+ 
+ 	int chip_irq;
+-	int irq_base;
+ 
+ 	/* chip id */
+ 	enum max77620_chip_id chip_id;