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path: root/target/linux/generic/hack-4.14/400-mt29f_spinand-fix-memleak.patch
blob: d479aba01a558e3632b5822370fa76763fe43dbc (plain)
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--- a/drivers/staging/mt29f_spinand/mt29f_spinand.c
+++ b/drivers/staging/mt29f_spinand/mt29f_spinand.c
@@ -492,7 +492,7 @@ static int spinand_program_page(struct s
 #ifdef CONFIG_MTD_SPINAND_ONDIEECC
 	unsigned int i, j;
 
-	wbuf = devm_kzalloc(&spi_nand->dev, CACHE_BUF, GFP_KERNEL);
+	wbuf = kzalloc(CACHE_BUF, GFP_KERNEL);
 	if (!wbuf)
 		return -ENOMEM;
 
@@ -500,7 +500,7 @@ static int spinand_program_page(struct s
 	retval = spinand_read_page(spi_nand, page_id, 0, CACHE_BUF, wbuf);
 	if (retval < 0) {
 		dev_err(&spi_nand->dev, "ecc error on read page!!!\n");
-		return retval;
+		goto cleanup;
 	}
 
 	for (i = offset, j = 0; i < len; i++, j++)
@@ -510,7 +510,7 @@ static int spinand_program_page(struct s
 		retval = spinand_enable_ecc(spi_nand);
 		if (retval < 0) {
 			dev_err(&spi_nand->dev, "enable ecc failed!!\n");
-			return retval;
+			goto cleanup;
 		}
 	}
 #else
@@ -519,7 +519,7 @@ static int spinand_program_page(struct s
 	retval = spinand_write_enable(spi_nand);
 	if (retval < 0) {
 		dev_err(&spi_nand->dev, "write enable failed!!\n");
-		return retval;
+		goto cleanup;
 	}
 	if (wait_till_ready(spi_nand))
 		dev_err(&spi_nand->dev, "wait timedout!!!\n");
@@ -527,23 +527,24 @@ static int spinand_program_page(struct s
 	retval = spinand_program_data_to_cache(spi_nand, page_id,
 					       offset, len, wbuf);
 	if (retval < 0)
-		return retval;
+		goto cleanup;
 	retval = spinand_program_execute(spi_nand, page_id);
 	if (retval < 0)
-		return retval;
+		goto cleanup;
 	while (1) {
 		retval = spinand_read_status(spi_nand, &status);
 		if (retval < 0) {
 			dev_err(&spi_nand->dev,
 				"error %d reading status register\n", retval);
-			return retval;
+			goto cleanup;
 		}
 
 		if ((status & STATUS_OIP_MASK) == STATUS_READY) {
 			if ((status & STATUS_P_FAIL_MASK) == STATUS_P_FAIL) {
 				dev_err(&spi_nand->dev,
 					"program error, page %d\n", page_id);
-				return -1;
+				retval = -1;
+				goto cleanup;
 			}
 			break;
 		}
@@ -553,13 +554,20 @@ static int spinand_program_page(struct s
 		retval = spinand_disable_ecc(spi_nand);
 		if (retval < 0) {
 			dev_err(&spi_nand->dev, "disable ecc failed!!\n");
-			return retval;
+			goto cleanup;
 		}
 		enable_hw_ecc = 0;
 	}
+	kfree(wbuf);
 #endif
-
 	return 0;
+
+cleanup:
+#ifdef CONFIG_MTD_SPINAND_ONDIEECC
+	kfree(wbuf);
+#endif
+	return retval;
+
 }
 
 /**