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@@ -0,0 +1,39 @@
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+diff -Naurp a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c
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+--- a/drivers/gpio/gpio-pca953x.c 2018-03-05 08:25:33.000000000 +0100
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++++ b/drivers/gpio/gpio-pca953x.c 2018-03-10 21:16:09.597556913 +0100
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+@@ -123,10 +123,16 @@ static int pca953x_read_single(struct pc
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+
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+ ret = i2c_smbus_read_byte_data(chip->client,
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+ (reg << bank_shift) + offset);
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++
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++ if (ret < 0) { /* only one retry due to i2c quirks */
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++ /*dev_err(&chip->client->dev, "retry failed reading (single) register\n");*/
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++ ret = i2c_smbus_read_byte_data(chip->client,
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++ (reg << bank_shift) + offset);
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++ }
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+ *val = ret;
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+
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+ if (ret < 0) {
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+- dev_err(&chip->client->dev, "failed reading register\n");
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++ dev_err(&chip->client->dev, "failed reading (single) register\n");
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+ return ret;
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+ }
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+
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+@@ -207,7 +213,7 @@ static int pca953x_read_regs(struct pca9
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+ val[1] = (u16)ret >> 8;
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+ }
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+ if (ret < 0) {
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+- dev_err(&chip->client->dev, "failed reading register\n");
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++ dev_err(&chip->client->dev, "failed reading (regs) register\n");
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+ return ret;
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+ }
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+
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+@@ -315,7 +321,7 @@ static int pca953x_gpio_get_value(struct
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+ * do unless gpio_*_value_cansleep() calls become different
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+ * from their nonsleeping siblings (and report faults).
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+ */
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+- return 0;
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++ return 1;
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+ }
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+
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+ return (reg_val & (1u << (off % BANK_SZ))) ? 1 : 0;
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