Merge tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linuxgrafted

Pull I3C updates from Alexandre Belloni:
 "A new driver this cycle, for the AMD AXI I3C controller.

  There are also new features such as IBI wakeup support, SETAASA device
  discovery and ACPI support for the the DAA methods, meaning we can now
  communicate with the SPD devices on DDR5 modules.

  New driver:
   - AMD AXI I3C master controller

  Subsystem:
   - I3C Common Command Code (CCC) handling improvements, especially
     around GET CCCs
   - SETAASA device discovery support
   - ACPI support for all existing DAA methods like SETDASA, SETNEWDA as
     well as I2C devices on I3C bus
   - IBI-based wakeup support

  Drivers:
   - dw: SETAASA support
   - mipi-i3c-hci: advertise IBI wakeup capability, AMD_PT I3C
     controller support, PIO queue management support for HCI v1.2
   - renesas: improve suspend to RAM support, add runtime PM support"

* tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux: (70 commits)
  i3c: dw: reduce do_daa time if there's no client
  i3c: mipi-i3c-hci: Add support for AMD_PT I3C controller
  i3c: mipi-i3c-hci: Add PIO queue management support for HCI v1.2
  i3c: mipi-i3c-hci: Fix missing STAT_IBI_STATUS_THLD in PIO mode
  i3c: dw: rename "pclk" to "apb" to match dt-binding
  i3c: dw: make struct dw_i3c_cmd smaller
  i3c: dw: use COMMAND_PORT_TRANSFER_ARG instead of hardcoding
  i3c: renesas: Don't register devices when ENTDAA times out
  i3c: master: dw-i3c-master: fix OD timing for first broadcast
  i3c: mipi-i3c-hci: Advertise IBI wakeup capability
  i3c: mipi-i3c-hci: Factor out i3c_hci_sysdev()
  i3c: mipi-i3c-hci-pci: Propagate I3C wakeup requirements to PCI
  i3c: master: Reject IBI requests from non-IBI-capable devices
  i3c: master: Add helper to query bus wakeup requirements
  i3c: master: Report wakeup events for IBIs
  i3c: master: Support IBI-based wakeup capability
  i3c: master: Fix potential UAF in i3c_device_match()
  i3c: master: Fix potential UAF in i3c_device_uevent()
  i3c: Make dev->desc locking assumptions explicit
  i3c: master: Fix use-after-free of master->this
  ...

1 files changed, 118 insertions, 0 deletions

diff --git a/fs/befs/super.c b/fs/befs/super.c
new file mode 100644
index 000000000..7c50025c9
--- /dev/null
+++ b/fs/befs/super.c
@@ -0,0 +1,118 @@
+/*
+ * super.c
+ *
+ * Copyright (C) 2001-2002 Will Dyson <will_dyson@pobox.com>
+ *
+ * Licensed under the GNU GPL. See the file COPYING for details.
+ *
+ */
+
+#include <linux/fs.h>
+#include <asm/page.h> /* for PAGE_SIZE */
+
+#include "befs.h"
+#include "super.h"
+
+/*
+ * befs_load_sb -- Read from disk and properly byteswap all the fields
+ * of the befs superblock
+ */
+int
+befs_load_sb(struct super_block *sb, befs_super_block *disk_sb)
+{
+	struct befs_sb_info *befs_sb = BEFS_SB(sb);
+
+	/* Check the byte order of the filesystem */
+	if (disk_sb->fs_byte_order == BEFS_BYTEORDER_NATIVE_LE)
+		befs_sb->byte_order = BEFS_BYTESEX_LE;
+	else if (disk_sb->fs_byte_order == BEFS_BYTEORDER_NATIVE_BE)
+		befs_sb->byte_order = BEFS_BYTESEX_BE;
+
+	befs_sb->magic1 = fs32_to_cpu(sb, disk_sb->magic1);
+	befs_sb->magic2 = fs32_to_cpu(sb, disk_sb->magic2);
+	befs_sb->magic3 = fs32_to_cpu(sb, disk_sb->magic3);
+	befs_sb->block_size = fs32_to_cpu(sb, disk_sb->block_size);
+	befs_sb->block_shift = fs32_to_cpu(sb, disk_sb->block_shift);
+	befs_sb->num_blocks = fs64_to_cpu(sb, disk_sb->num_blocks);
+	befs_sb->used_blocks = fs64_to_cpu(sb, disk_sb->used_blocks);
+	befs_sb->inode_size = fs32_to_cpu(sb, disk_sb->inode_size);
+
+	befs_sb->blocks_per_ag = fs32_to_cpu(sb, disk_sb->blocks_per_ag);
+	befs_sb->ag_shift = fs32_to_cpu(sb, disk_sb->ag_shift);
+	befs_sb->num_ags = fs32_to_cpu(sb, disk_sb->num_ags);
+
+	befs_sb->flags = fs32_to_cpu(sb, disk_sb->flags);
+
+	befs_sb->log_blocks = fsrun_to_cpu(sb, disk_sb->log_blocks);
+	befs_sb->log_start = fs64_to_cpu(sb, disk_sb->log_start);
+	befs_sb->log_end = fs64_to_cpu(sb, disk_sb->log_end);
+
+	befs_sb->root_dir = fsrun_to_cpu(sb, disk_sb->root_dir);
+	befs_sb->indices = fsrun_to_cpu(sb, disk_sb->indices);
+	befs_sb->nls = NULL;
+
+	return BEFS_OK;
+}
+
+int
+befs_check_sb(struct super_block *sb)
+{
+	struct befs_sb_info *befs_sb = BEFS_SB(sb);
+
+	/* Check magic headers of super block */
+	if ((befs_sb->magic1 != BEFS_SUPER_MAGIC1)
+	    || (befs_sb->magic2 != BEFS_SUPER_MAGIC2)
+	    || (befs_sb->magic3 != BEFS_SUPER_MAGIC3)) {
+		befs_error(sb, "invalid magic header");
+		return BEFS_ERR;
+	}
+
+	/*
+	 * Check blocksize of BEFS.
+	 *
+	 * Blocksize of BEFS is 1024, 2048, 4096 or 8192.
+	 */
+
+	if ((befs_sb->block_size != 1024)
+	    && (befs_sb->block_size != 2048)
+	    && (befs_sb->block_size != 4096)
+	    && (befs_sb->block_size != 8192)) {
+		befs_error(sb, "invalid blocksize: %u", befs_sb->block_size);
+		return BEFS_ERR;
+	}
+
+	if (befs_sb->block_size > PAGE_SIZE) {
+		befs_error(sb, "blocksize(%u) cannot be larger "
+			   "than system pagesize(%lu)", befs_sb->block_size,
+			   PAGE_SIZE);
+		return BEFS_ERR;
+	}
+
+	/*
+	 * block_shift and block_size encode the same information
+	 * in different ways as a consistency check.
+	 */
+
+	if ((1 << befs_sb->block_shift) != befs_sb->block_size) {
+		befs_error(sb, "block_shift disagrees with block_size. "
+			   "Corruption likely.");
+		return BEFS_ERR;
+	}
+
+
+	/* ag_shift also encodes the same information as blocks_per_ag in a
+	 * different way, non-fatal consistency check
+	 */
+	if ((1 << befs_sb->ag_shift) != befs_sb->blocks_per_ag)
+		befs_error(sb, "ag_shift disagrees with blocks_per_ag.");
+
+	if (befs_sb->log_start != befs_sb->log_end ||
+	    befs_sb->flags == BEFS_DIRTY) {
+		befs_error(sb, "Filesystem not clean! There are blocks in the "
+			   "journal. You must boot into BeOS and mount this "
+			   "volume to make it clean.");
+		return BEFS_ERR;
+	}
+
+	return BEFS_OK;
+}