add boot partition size

hc

2023-12-11 d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d

 kernel/drivers/mtd/chips/cfi_cmdset_0001.c
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@@ -420,8 +420,9 @@
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 		extra_size = 0;
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 		/* Protection Register info */
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-		extra_size += (extp->NumProtectionFields - 1) *
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-			      sizeof(struct cfi_intelext_otpinfo);
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+		if (extp->NumProtectionFields)
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+			extra_size += (extp->NumProtectionFields - 1) *
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+				      sizeof(struct cfi_intelext_otpinfo);
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 	}
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 	if (extp->MinorVersion >= '1') {
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@@ -695,14 +696,16 @@
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 	 */
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 	if (extp && extp->MajorVersion == '1' && extp->MinorVersion >= '3'
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 	    && extp->FeatureSupport & (1 << 9)) {
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+		int offs = 0;
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 		struct cfi_private *newcfi;
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 		struct flchip *chip;
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 		struct flchip_shared *shared;
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-		int offs, numregions, numparts, partshift, numvirtchips, i, j;
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+		int numregions, numparts, partshift, numvirtchips, i, j;
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 		/* Protection Register info */
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-		offs = (extp->NumProtectionFields - 1) *
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-		       sizeof(struct cfi_intelext_otpinfo);
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+		if (extp->NumProtectionFields)
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+			offs = (extp->NumProtectionFields - 1) *
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+			       sizeof(struct cfi_intelext_otpinfo);
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 		/* Burst Read info */
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 		offs += extp->extra[offs+1]+2;
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@@ -756,7 +759,8 @@
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 		}
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 		numvirtchips = cfi->numchips * numparts;
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-		newcfi = kmalloc(sizeof(struct cfi_private) + numvirtchips * sizeof(struct flchip), GFP_KERNEL);
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+		newcfi = kmalloc(struct_size(newcfi, chips, numvirtchips),
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+				 GFP_KERNEL);
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 		if (!newcfi)
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 			return -ENOMEM;
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 		shared = kmalloc_array(cfi->numchips,
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@@ -833,7 +837,7 @@
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 			/* Someone else might have been playing with it. */
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 			return -EAGAIN;
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 		}
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-		/* Fall through */
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+		fallthrough;
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 	case FL_READY:
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 	case FL_CFI_QUERY:
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 	case FL_JEDEC_QUERY:
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@@ -906,7 +910,7 @@
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 		/* Only if there's no operation suspended... */
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 		if (mode == FL_READY && chip->oldstate == FL_READY)
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 			return 0;
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-		/* Fall through */
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+		fallthrough;
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 	default:
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 	sleep:
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 		set_current_state(TASK_UNINTERRUPTIBLE);
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@@ -1352,7 +1356,7 @@
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 {
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 	unsigned long cmd_addr;
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 	struct cfi_private *cfi = map->fldrv_priv;
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-	int ret = 0;
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+	int ret;
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 	adr += chip->start;
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@@ -1382,7 +1386,7 @@
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 	struct cfi_private *cfi = map->fldrv_priv;
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 	unsigned long ofs, last_end = 0;
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 	int chipnum;
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-	int ret = 0;
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+	int ret;
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 	if (!map->virt)
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 		return -EINVAL;
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@@ -1549,7 +1553,7 @@
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 {
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 	struct cfi_private *cfi = map->fldrv_priv;
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 	map_word status, write_cmd;
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-	int ret=0;
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+	int ret;
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 	adr += chip->start;
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@@ -1623,7 +1627,7 @@
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 {
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 	struct map_info *map = mtd->priv;
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 	struct cfi_private *cfi = map->fldrv_priv;
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-	int ret = 0;
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+	int ret;
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 	int chipnum;
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 	unsigned long ofs;
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@@ -1870,7 +1874,7 @@
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 	struct map_info *map = mtd->priv;
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 	struct cfi_private *cfi = map->fldrv_priv;
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 	int wbufsize = cfi_interleave(cfi) << cfi->cfiq->MaxBufWriteSize;
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-	int ret = 0;
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+	int ret;
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 	int chipnum;
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 	unsigned long ofs, vec_seek, i;
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 	size_t len = 0;