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hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/fs/hfsplus/wrapper.c
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@@ -127,31 +127,34 @@
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 static int hfsplus_get_last_session(struct super_block *sb,
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 				    sector_t *start, sector_t *size)
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 {
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-	struct cdrom_multisession ms_info;
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-	struct cdrom_tocentry te;
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-	int res;
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+	struct cdrom_device_info *cdi = disk_to_cdi(sb->s_bdev->bd_disk);
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 	/* default values */
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 	*start = 0;
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 	*size = i_size_read(sb->s_bdev->bd_inode) >> 9;
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 	if (HFSPLUS_SB(sb)->session >= 0) {
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+		struct cdrom_tocentry te;
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+
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+		if (!cdi)
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+			return -EINVAL;
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+
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 		te.cdte_track = HFSPLUS_SB(sb)->session;
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 		te.cdte_format = CDROM_LBA;
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-		res = ioctl_by_bdev(sb->s_bdev,
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-			CDROMREADTOCENTRY, (unsigned long)&te);
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-		if (!res && (te.cdte_ctrl & CDROM_DATA_TRACK) == 4) {
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-			*start = (sector_t)te.cdte_addr.lba << 2;
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-			return 0;
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+		if (cdrom_read_tocentry(cdi, &te) ||
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+		    (te.cdte_ctrl & CDROM_DATA_TRACK) != 4) {
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+			pr_err("invalid session number or type of track\n");
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+			return -EINVAL;
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 		}
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-		pr_err("invalid session number or type of track\n");
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-		return -EINVAL;
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+		*start = (sector_t)te.cdte_addr.lba << 2;
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+	} else if (cdi) {
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+		struct cdrom_multisession ms_info;
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+
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+		ms_info.addr_format = CDROM_LBA;
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+		if (cdrom_multisession(cdi, &ms_info) == 0 && ms_info.xa_flag)
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+			*start = (sector_t)ms_info.addr.lba << 2;
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 	}
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-	ms_info.addr_format = CDROM_LBA;
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-	res = ioctl_by_bdev(sb->s_bdev, CDROMMULTISESSION,
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-		(unsigned long)&ms_info);
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-	if (!res && ms_info.xa_flag)
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-		*start = (sector_t)ms_info.addr.lba << 2;
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+
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 	return 0;
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 }
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@@ -192,7 +195,7 @@
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 	switch (sbi->s_vhdr->signature) {
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 	case cpu_to_be16(HFSPLUS_VOLHEAD_SIGX):
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 		set_bit(HFSPLUS_SB_HFSX, &sbi->flags);
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-		/*FALLTHRU*/
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+		fallthrough;
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 	case cpu_to_be16(HFSPLUS_VOLHEAD_SIG):
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 		break;
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 	case cpu_to_be16(HFSP_WRAP_MAGIC):