1 files changed, 12 insertions, 45 deletions

diff --git a/drivers/i2c/busses/i2c-xgene-slimpro.c b/drivers/i2c/busses/i2c-xgene-slimpro.c
index 663fe5604dd6..b29dec66b2c3 100644
--- a/drivers/i2c/busses/i2c-xgene-slimpro.c
+++ b/drivers/i2c/busses/i2c-xgene-slimpro.c
@@ -101,8 +101,6 @@ struct slimpro_i2c_dev {
 	struct completion rd_complete;
 	u8 dma_buffer[I2C_SMBUS_BLOCK_MAX + 1]; /* dma_buffer[0] is used for length */
 	u32 *resp_msg;
-	phys_addr_t comm_base_addr;
-	void *pcc_comm_addr;
 };
 
 #define to_slimpro_i2c_dev(cl)	\
@@ -148,7 +146,8 @@ static void slimpro_i2c_rx_cb(struct mbox_client *cl, void *mssg)
 static void slimpro_i2c_pcc_rx_cb(struct mbox_client *cl, void *msg)
 {
 	struct slimpro_i2c_dev *ctx = to_slimpro_i2c_dev(cl);
-	struct acpi_pcct_shared_memory *generic_comm_base = ctx->pcc_comm_addr;
+	struct acpi_pcct_shared_memory __iomem *generic_comm_base =
+							ctx->pcc_chan->shmem;
 
 	/* Check if platform sends interrupt */
 	if (!xgene_word_tst_and_clr(&generic_comm_base->status,
@@ -169,7 +168,8 @@ static void slimpro_i2c_pcc_rx_cb(struct mbox_client *cl, void *msg)
 
 static void slimpro_i2c_pcc_tx_prepare(struct slimpro_i2c_dev *ctx, u32 *msg)
 {
-	struct acpi_pcct_shared_memory *generic_comm_base = ctx->pcc_comm_addr;
+	struct acpi_pcct_shared_memory __iomem *generic_comm_base =
+							ctx->pcc_chan->shmem;
 	u32 *ptr = (void *)(generic_comm_base + 1);
 	u16 status;
 	int i;
@@ -457,22 +457,18 @@ static int xgene_slimpro_i2c_probe(struct platform_device *pdev)
 		cl->tx_block = true;
 		cl->rx_callback = slimpro_i2c_rx_cb;
 		ctx->mbox_chan = mbox_request_channel(cl, MAILBOX_I2C_INDEX);
-		if (IS_ERR(ctx->mbox_chan)) {
-			dev_err(&pdev->dev, "i2c mailbox channel request failed\n");
-			return PTR_ERR(ctx->mbox_chan);
-		}
+		if (IS_ERR(ctx->mbox_chan))
+			return dev_err_probe(&pdev->dev, PTR_ERR(ctx->mbox_chan),
+					     "i2c mailbox channel request failed\n");
 	} else {
 		struct pcc_mbox_chan *pcc_chan;
 		const struct acpi_device_id *acpi_id;
-		int version = XGENE_SLIMPRO_I2C_V1;
 
 		acpi_id = acpi_match_device(pdev->dev.driver->acpi_match_table,
 					    &pdev->dev);
 		if (!acpi_id)
 			return -EINVAL;
 
-		version = (int)acpi_id->driver_data;
-
 		if (device_property_read_u32(&pdev->dev, "pcc-channel",
 					     &ctx->mbox_idx))
 			ctx->mbox_idx = MAILBOX_I2C_INDEX;
@@ -480,48 +476,19 @@ static int xgene_slimpro_i2c_probe(struct platform_device *pdev)
 		cl->tx_block = false;
 		cl->rx_callback = slimpro_i2c_pcc_rx_cb;
 		pcc_chan = pcc_mbox_request_channel(cl, ctx->mbox_idx);
-		if (IS_ERR(pcc_chan)) {
-			dev_err(&pdev->dev, "PCC mailbox channel request failed\n");
-			return PTR_ERR(pcc_chan);
-		}
+		if (IS_ERR(pcc_chan))
+			return dev_err_probe(&pdev->dev, PTR_ERR(pcc_chan),
+					     "PCC mailbox channel request failed\n");
 
 		ctx->pcc_chan = pcc_chan;
 		ctx->mbox_chan = pcc_chan->mchan;
 
 		if (!ctx->mbox_chan->mbox->txdone_irq) {
-			dev_err(&pdev->dev, "PCC IRQ not supported\n");
-			rc = -ENOENT;
+			rc = dev_err_probe(&pdev->dev, -ENOENT,
+					   "PCC IRQ not supported\n");
 			goto mbox_err;
 		}
 
-		/*
-		 * This is the shared communication region
-		 * for the OS and Platform to communicate over.
-		 */
-		ctx->comm_base_addr = pcc_chan->shmem_base_addr;
-		if (ctx->comm_base_addr) {
-			if (version == XGENE_SLIMPRO_I2C_V2)
-				ctx->pcc_comm_addr = memremap(
-							ctx->comm_base_addr,
-							pcc_chan->shmem_size,
-							MEMREMAP_WT);
-			else
-				ctx->pcc_comm_addr = memremap(
-							ctx->comm_base_addr,
-							pcc_chan->shmem_size,
-							MEMREMAP_WB);
-		} else {
-			dev_err(&pdev->dev, "Failed to get PCC comm region\n");
-			rc = -ENOENT;
-			goto mbox_err;
-		}
-
-		if (!ctx->pcc_comm_addr) {
-			dev_err(&pdev->dev,
-				"Failed to ioremap PCC comm region\n");
-			rc = -ENOMEM;
-			goto mbox_err;
-		}
 	}
 	rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
 	if (rc)