From 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:44:59 +0000
Subject: [PATCH] gmac get mac form eeprom
---
kernel/fs/udf/lowlevel.c | 29 +++++++++++++----------------
1 files changed, 13 insertions(+), 16 deletions(-)
diff --git a/kernel/fs/udf/lowlevel.c b/kernel/fs/udf/lowlevel.c
index 5c7ec12..f1094cd 100644
--- a/kernel/fs/udf/lowlevel.c
+++ b/kernel/fs/udf/lowlevel.c
@@ -27,41 +27,38 @@
unsigned int udf_get_last_session(struct super_block *sb)
{
+ struct cdrom_device_info *cdi = disk_to_cdi(sb->s_bdev->bd_disk);
struct cdrom_multisession ms_info;
- unsigned int vol_desc_start;
- struct block_device *bdev = sb->s_bdev;
- int i;
- vol_desc_start = 0;
+ if (!cdi) {
+ udf_debug("CDROMMULTISESSION not supported.\n");
+ return 0;
+ }
+
ms_info.addr_format = CDROM_LBA;
- i = ioctl_by_bdev(bdev, CDROMMULTISESSION, (unsigned long)&ms_info);
-
- if (i == 0) {
+ if (cdrom_multisession(cdi, &ms_info) == 0) {
udf_debug("XA disk: %s, vol_desc_start=%d\n",
ms_info.xa_flag ? "yes" : "no", ms_info.addr.lba);
if (ms_info.xa_flag) /* necessary for a valid ms_info.addr */
- vol_desc_start = ms_info.addr.lba;
- } else {
- udf_debug("CDROMMULTISESSION not supported: rc=%d\n", i);
+ return ms_info.addr.lba;
}
- return vol_desc_start;
+ return 0;
}
unsigned long udf_get_last_block(struct super_block *sb)
{
struct block_device *bdev = sb->s_bdev;
+ struct cdrom_device_info *cdi = disk_to_cdi(bdev->bd_disk);
unsigned long lblock = 0;
/*
- * ioctl failed or returned obviously bogus value?
+ * The cdrom layer call failed or returned obviously bogus value?
* Try using the device size...
*/
- if (ioctl_by_bdev(bdev, CDROM_LAST_WRITTEN, (unsigned long) &lblock) ||
- lblock == 0)
+ if (!cdi || cdrom_get_last_written(cdi, &lblock) || lblock == 0)
lblock = i_size_read(bdev->bd_inode) >> sb->s_blocksize_bits;
if (lblock)
return lblock - 1;
- else
- return 0;
+ return 0;
}
--
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