Merging upstream version 4.19.282.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

5 files changed, 37 insertions, 29 deletions

diff --git a/drivers/i2c/busses/i2c-imx-lpi2c.c b/drivers/i2c/busses/i2c-imx-lpi2c.c
index 06c4c767a..f494b2749 100644
--- a/drivers/i2c/busses/i2c-imx-lpi2c.c
+++ b/drivers/i2c/busses/i2c-imx-lpi2c.c
@@ -468,6 +468,8 @@ static int lpi2c_imx_xfer(struct i2c_adapter *adapter,
 		if (num == 1 && msgs[0].len == 0)
 			goto stop;
 
+		lpi2c_imx->rx_buf = NULL;
+		lpi2c_imx->tx_buf = NULL;
 		lpi2c_imx->delivered = 0;
 		lpi2c_imx->msglen = msgs[i].len;
 		init_completion(&lpi2c_imx->complete);
@@ -508,10 +510,14 @@ disable:
 static irqreturn_t lpi2c_imx_isr(int irq, void *dev_id)
 {
 	struct lpi2c_imx_struct *lpi2c_imx = dev_id;
+	unsigned int enabled;
 	unsigned int temp;
 
+	enabled = readl(lpi2c_imx->base + LPI2C_MIER);
+
 	lpi2c_imx_intctrl(lpi2c_imx, 0);
 	temp = readl(lpi2c_imx->base + LPI2C_MSR);
+	temp &= enabled;
 
 	if (temp & MSR_RDF)
 		lpi2c_imx_read_rxfifo(lpi2c_imx);
diff --git a/drivers/i2c/busses/i2c-ismt.c b/drivers/i2c/busses/i2c-ismt.c
index 807960611..9f5915d5f 100644
--- a/drivers/i2c/busses/i2c-ismt.c
+++ b/drivers/i2c/busses/i2c-ismt.c
@@ -504,6 +504,9 @@ static int ismt_access(struct i2c_adapter *adap, u16 addr,
 		if (read_write == I2C_SMBUS_WRITE) {
 			/* Block Write */
 			dev_dbg(dev, "I2C_SMBUS_BLOCK_DATA:  WRITE\n");
+			if (data->block[0] < 1 || data->block[0] > I2C_SMBUS_BLOCK_MAX)
+				return -EINVAL;
+
 			dma_size = data->block[0] + 1;
 			dma_direction = DMA_TO_DEVICE;
 			desc->wr_len_cmd = dma_size;
diff --git a/drivers/i2c/busses/i2c-pxa-pci.c b/drivers/i2c/busses/i2c-pxa-pci.c
index 72ea8f4c6..883937c84 100644
--- a/drivers/i2c/busses/i2c-pxa-pci.c
+++ b/drivers/i2c/busses/i2c-pxa-pci.c
@@ -105,7 +105,7 @@ static int ce4100_i2c_probe(struct pci_dev *dev,
 	int i;
 	struct ce4100_devices *sds;
 
-	ret = pci_enable_device_mem(dev);
+	ret = pcim_enable_device(dev);
 	if (ret)
 		return ret;
 
@@ -114,10 +114,8 @@ static int ce4100_i2c_probe(struct pci_dev *dev,
 		return -EINVAL;
 	}
 	sds = kzalloc(sizeof(*sds), GFP_KERNEL);
-	if (!sds) {
-		ret = -ENOMEM;
-		goto err_mem;
-	}
+	if (!sds)
+		return -ENOMEM;
 
 	for (i = 0; i < ARRAY_SIZE(sds->pdev); i++) {
 		sds->pdev[i] = add_i2c_device(dev, i);
@@ -133,8 +131,6 @@ static int ce4100_i2c_probe(struct pci_dev *dev,
 
 err_dev_add:
 	kfree(sds);
-err_mem:
-	pci_disable_device(dev);
 	return ret;
 }
 
diff --git a/drivers/i2c/busses/i2c-rk3x.c b/drivers/i2c/busses/i2c-rk3x.c
index e76ad020a..61ab462fd 100644
--- a/drivers/i2c/busses/i2c-rk3x.c
+++ b/drivers/i2c/busses/i2c-rk3x.c
@@ -82,7 +82,7 @@ enum {
 #define DEFAULT_SCL_RATE  (100 * 1000) /* Hz */
 
 /**
- * struct i2c_spec_values:
+ * struct i2c_spec_values - I2C specification values for various modes
  * @min_hold_start_ns: min hold time (repeated) START condition
  * @min_low_ns: min LOW period of the SCL clock
  * @min_high_ns: min HIGH period of the SCL cloc
@@ -138,7 +138,7 @@ static const struct i2c_spec_values fast_mode_plus_spec = {
 };
 
 /**
- * struct rk3x_i2c_calced_timings:
+ * struct rk3x_i2c_calced_timings - calculated V1 timings
  * @div_low: Divider output for low
  * @div_high: Divider output for high
  * @tuning: Used to adjust setup/hold data time,
@@ -161,7 +161,7 @@ enum rk3x_i2c_state {
 };
 
 /**
- * struct rk3x_i2c_soc_data:
+ * struct rk3x_i2c_soc_data - SOC-specific data
  * @grf_offset: offset inside the grf regmap for setting the i2c type
  * @calc_timings: Callback function for i2c timing information calculated
  */
@@ -241,7 +241,8 @@ static inline void rk3x_i2c_clean_ipd(struct rk3x_i2c *i2c)
 }
 
 /**
- * Generate a START condition, which triggers a REG_INT_START interrupt.
+ * rk3x_i2c_start - Generate a START condition, which triggers a REG_INT_START interrupt.
+ * @i2c: target controller data
  */
 static void rk3x_i2c_start(struct rk3x_i2c *i2c)
 {
@@ -260,8 +261,8 @@ static void rk3x_i2c_start(struct rk3x_i2c *i2c)
 }
 
 /**
- * Generate a STOP condition, which triggers a REG_INT_STOP interrupt.
- *
+ * rk3x_i2c_stop - Generate a STOP condition, which triggers a REG_INT_STOP interrupt.
+ * @i2c: target controller data
  * @error: Error code to return in rk3x_i2c_xfer
  */
 static void rk3x_i2c_stop(struct rk3x_i2c *i2c, int error)
@@ -300,7 +301,8 @@ static void rk3x_i2c_stop(struct rk3x_i2c *i2c, int error)
 }
 
 /**
- * Setup a read according to i2c->msg
+ * rk3x_i2c_prepare_read - Setup a read according to i2c->msg
+ * @i2c: target controller data
  */
 static void rk3x_i2c_prepare_read(struct rk3x_i2c *i2c)
 {
@@ -331,7 +333,8 @@ static void rk3x_i2c_prepare_read(struct rk3x_i2c *i2c)
 }
 
 /**
- * Fill the transmit buffer with data from i2c->msg
+ * rk3x_i2c_fill_transmit_buf - Fill the transmit buffer with data from i2c->msg
+ * @i2c: target controller data
  */
 static void rk3x_i2c_fill_transmit_buf(struct rk3x_i2c *i2c)
 {
@@ -534,11 +537,10 @@ out:
 }
 
 /**
- * Get timing values of I2C specification
- *
+ * rk3x_i2c_get_spec - Get timing values of I2C specification
  * @speed: Desired SCL frequency
  *
- * Returns: Matched i2c spec values.
+ * Return: Matched i2c_spec_values.
  */
 static const struct i2c_spec_values *rk3x_i2c_get_spec(unsigned int speed)
 {
@@ -551,13 +553,12 @@ static const struct i2c_spec_values *rk3x_i2c_get_spec(unsigned int speed)
 }
 
 /**
- * Calculate divider values for desired SCL frequency
- *
+ * rk3x_i2c_v0_calc_timings - Calculate divider values for desired SCL frequency
  * @clk_rate: I2C input clock rate
  * @t: Known I2C timing information
  * @t_calc: Caculated rk3x private timings that would be written into regs
  *
- * Returns: 0 on success, -EINVAL if the goal SCL rate is too slow. In that case
+ * Return: %0 on success, -%EINVAL if the goal SCL rate is too slow. In that case
  * a best-effort divider value is returned in divs. If the target rate is
  * too high, we silently use the highest possible rate.
  */
@@ -712,13 +713,12 @@ static int rk3x_i2c_v0_calc_timings(unsigned long clk_rate,
 }
 
 /**
- * Calculate timing values for desired SCL frequency
- *
+ * rk3x_i2c_v1_calc_timings - Calculate timing values for desired SCL frequency
  * @clk_rate: I2C input clock rate
  * @t: Known I2C timing information
  * @t_calc: Caculated rk3x private timings that would be written into regs
  *
- * Returns: 0 on success, -EINVAL if the goal SCL rate is too slow. In that case
+ * Return: %0 on success, -%EINVAL if the goal SCL rate is too slow. In that case
  * a best-effort divider value is returned in divs. If the target rate is
  * too high, we silently use the highest possible rate.
  * The following formulas are v1's method to calculate timings.
@@ -962,14 +962,14 @@ static int rk3x_i2c_clk_notifier_cb(struct notifier_block *nb, unsigned long
 }
 
 /**
- * Setup I2C registers for an I2C operation specified by msgs, num.
- *
- * Must be called with i2c->lock held.
- *
+ * rk3x_i2c_setup - Setup I2C registers for an I2C operation specified by msgs, num.
+ * @i2c: target controller data
  * @msgs: I2C msgs to process
  * @num: Number of msgs
  *
- * returns: Number of I2C msgs processed or negative in case of error
+ * Must be called with i2c->lock held.
+ *
+ * Return: Number of I2C msgs processed or negative in case of error
  */
 static int rk3x_i2c_setup(struct rk3x_i2c *i2c, struct i2c_msg *msgs, int num)
 {
diff --git a/drivers/i2c/busses/i2c-xgene-slimpro.c b/drivers/i2c/busses/i2c-xgene-slimpro.c
index a7ac74601..7a746f413 100644
--- a/drivers/i2c/busses/i2c-xgene-slimpro.c
+++ b/drivers/i2c/busses/i2c-xgene-slimpro.c
@@ -321,6 +321,9 @@ static int slimpro_i2c_blkwr(struct slimpro_i2c_dev *ctx, u32 chip,
 	u32 msg[3];
 	int rc;
 
+	if (writelen > I2C_SMBUS_BLOCK_MAX)
+		return -EINVAL;
+
 	memcpy(ctx->dma_buffer, data, writelen);
 	paddr = dma_map_single(ctx->dev, ctx->dma_buffer, writelen,
 			       DMA_TO_DEVICE);