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, 87 insertions, 0 deletions

diff --git a/block/partitions/osf.c b/block/partitions/osf.c
new file mode 100644
index 000000000..2a692584d
--- /dev/null
+++ b/block/partitions/osf.c
@@ -0,0 +1,87 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ *  fs/partitions/osf.c
+ *
+ *  Code extracted from drivers/block/genhd.c
+ *
+ *  Copyright (C) 1991-1998  Linus Torvalds
+ *  Re-organised Feb 1998 Russell King
+ */
+
+#include "check.h"
+
+#define MAX_OSF_PARTITIONS 18
+#define DISKLABELMAGIC (0x82564557UL)
+
+int osf_partition(struct parsed_partitions *state)
+{
+	int i;
+	int slot = 1;
+	unsigned int npartitions;
+	Sector sect;
+	unsigned char *data;
+	struct disklabel {
+		__le32 d_magic;
+		__le16 d_type,d_subtype;
+		u8 d_typename[16];
+		u8 d_packname[16];
+		__le32 d_secsize;
+		__le32 d_nsectors;
+		__le32 d_ntracks;
+		__le32 d_ncylinders;
+		__le32 d_secpercyl;
+		__le32 d_secprtunit;
+		__le16 d_sparespertrack;
+		__le16 d_sparespercyl;
+		__le32 d_acylinders;
+		__le16 d_rpm, d_interleave, d_trackskew, d_cylskew;
+		__le32 d_headswitch, d_trkseek, d_flags;
+		__le32 d_drivedata[5];
+		__le32 d_spare[5];
+		__le32 d_magic2;
+		__le16 d_checksum;
+		__le16 d_npartitions;
+		__le32 d_bbsize, d_sbsize;
+		struct d_partition {
+			__le32 p_size;
+			__le32 p_offset;
+			__le32 p_fsize;
+			u8  p_fstype;
+			u8  p_frag;
+			__le16 p_cpg;
+		} d_partitions[MAX_OSF_PARTITIONS];
+	} * label;
+	struct d_partition * partition;
+
+	data = read_part_sector(state, 0, &sect);
+	if (!data)
+		return -1;
+
+	label = (struct disklabel *) (data+64);
+	partition = label->d_partitions;
+	if (le32_to_cpu(label->d_magic) != DISKLABELMAGIC) {
+		put_dev_sector(sect);
+		return 0;
+	}
+	if (le32_to_cpu(label->d_magic2) != DISKLABELMAGIC) {
+		put_dev_sector(sect);
+		return 0;
+	}
+	npartitions = le16_to_cpu(label->d_npartitions);
+	if (npartitions > MAX_OSF_PARTITIONS) {
+		put_dev_sector(sect);
+		return 0;
+	}
+	for (i = 0 ; i < npartitions; i++, partition++) {
+		if (slot == state->limit)
+		        break;
+		if (le32_to_cpu(partition->p_size))
+			put_partition(state, slot,
+				le32_to_cpu(partition->p_offset),
+				le32_to_cpu(partition->p_size));
+		slot++;
+	}
+	seq_buf_puts(&state->pp_buf, "\n");
+	put_dev_sector(sect);
+	return 1;
+}