add boot partition size

hc

2023-12-11 d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d

 kernel/drivers/media/i2c/smiapp/smiapp-regs.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * drivers/media/i2c/smiapp/smiapp-regs.c
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  *
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@@ -5,16 +6,9 @@
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  *
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  * Copyright (C) 2011--2012 Nokia Corporation
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  * Contact: Sakari Ailus <sakari.ailus@iki.fi>
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- *
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- * This program is free software; you can redistribute it and/or
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- * modify it under the terms of the GNU General Public License
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- * version 2 as published by the Free Software Foundation.
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- *
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- * This program is distributed in the hope that it will be useful, but
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- * WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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- * General Public License for more details.
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9
  */
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+
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+#include <asm/unaligned.h>
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12
 
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 #include <linux/delay.h>
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14
 #include <linux/i2c.h>
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@@ -77,18 +71,19 @@
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 {
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 	struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
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 	struct i2c_msg msg;
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-	unsigned char data[4];
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-	u16 offset = reg;
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+	unsigned char data_buf[sizeof(u32)] = { 0 };
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+	unsigned char offset_buf[sizeof(u16)];
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 	int r;
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+
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+	if (len > sizeof(data_buf))
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+		return -EINVAL;
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80
 
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 	msg.addr = client->addr;
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 	msg.flags = 0;
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-	msg.len = 2;
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-	msg.buf = data;
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+	msg.len = sizeof(offset_buf);
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+	msg.buf = offset_buf;
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+	put_unaligned_be16(reg, offset_buf);
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86
 
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-	/* high byte goes out first */
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-	data[0] = (u8) (offset >> 8);
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-	data[1] = (u8) offset;
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 	r = i2c_transfer(client->adapter, &msg, 1);
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 	if (r != 1) {
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 		if (r >= 0)
..
..
@@ -98,6 +93,8 @@
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93
 
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 	msg.len = len;
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 	msg.flags = I2C_M_RD;
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+	msg.buf = &data_buf[sizeof(data_buf) - len];
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+
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 	r = i2c_transfer(client->adapter, &msg, 1);
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 	if (r != 1) {
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100
 		if (r >= 0)
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@@ -105,27 +102,12 @@
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102
 		goto err;
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103
 	}
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104
 
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-	*val = 0;
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-	/* high byte comes first */
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-	switch (len) {
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-	case SMIAPP_REG_32BIT:
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-		*val = (data[0] << 24) + (data[1] << 16) + (data[2] << 8) +
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-			data[3];
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-		break;
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-	case SMIAPP_REG_16BIT:
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-		*val = (data[0] << 8) + data[1];
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-		break;
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-	case SMIAPP_REG_8BIT:
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-		*val = data[0];
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-		break;
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-	default:
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-		BUG();
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-	}
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+	*val = get_unaligned_be32(data_buf);
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106
 
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 	return 0;
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108
 
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 err:
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-	dev_err(&client->dev, "read from offset 0x%x error %d\n", offset, r);
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+	dev_err(&client->dev, "read from offset 0x%x error %d\n", reg, r);
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111
 
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 	return r;
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113
 }
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@@ -166,7 +148,7 @@
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 	    && len != SMIAPP_REG_32BIT)
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 		return -EINVAL;
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150
 
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-	if (len == SMIAPP_REG_8BIT || !only8)
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+	if (!only8)
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 		rval = ____smiapp_read(sensor, SMIAPP_REG_ADDR(reg), len, val);
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 	else
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 		rval = ____smiapp_read_8only(sensor, SMIAPP_REG_ADDR(reg), len,
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@@ -222,44 +204,19 @@
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 	struct i2c_msg msg;
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 	unsigned char data[6];
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 	unsigned int retries;
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-	u8 flags = SMIAPP_REG_FLAGS(reg);
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 	u8 len = SMIAPP_REG_WIDTH(reg);
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-	u16 offset = SMIAPP_REG_ADDR(reg);
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 	int r;
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209
 
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-	if ((len != SMIAPP_REG_8BIT && len != SMIAPP_REG_16BIT &&
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-	     len != SMIAPP_REG_32BIT) || flags)
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+	if (len > sizeof(data) - 2)
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 		return -EINVAL;
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-
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-	if (!sensor->active)
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-		return 0;
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212
 
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 	msg.addr = client->addr;
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214
 	msg.flags = 0; /* Write */
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215
 	msg.len = 2 + len;
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216
 	msg.buf = data;
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217
 
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-	/* high byte goes out first */
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-	data[0] = (u8) (reg >> 8);
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-	data[1] = (u8) (reg & 0xff);
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-
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-	switch (len) {
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-	case SMIAPP_REG_8BIT:
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-		data[2] = val;
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-		break;
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-	case SMIAPP_REG_16BIT:
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-		data[2] = val >> 8;
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-		data[3] = val;
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-		break;
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-	case SMIAPP_REG_32BIT:
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-		data[2] = val >> 24;
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-		data[3] = val >> 16;
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-		data[4] = val >> 8;
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-		data[5] = val;
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-		break;
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-	default:
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-		BUG();
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-	}
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+	put_unaligned_be16(SMIAPP_REG_ADDR(reg), data);
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+	put_unaligned_be32(val << (8 * (sizeof(val) - len)), data + 2);
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220
 
264
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 	for (retries = 0; retries < 5; retries++) {
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222
 		/*
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@@ -280,7 +237,8 @@
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237
 	}
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238
 
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 	dev_err(&client->dev,
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-		"wrote 0x%x to offset 0x%x error %d\n", val, offset, r);
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+		"wrote 0x%x to offset 0x%x error %d\n", val,
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+		SMIAPP_REG_ADDR(reg), r);
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242
 
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 	return r;
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244
 }