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authorLinus Torvalds <torvalds@linux-foundation.org>2026-08-24 08:46:03 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2026-08-24 08:46:03 -0700
commitcf9610f9116d55c5a66ef9f1faecacabd93a9322 (patch)
tree757a3d280760c654767631cab5ad8af2d86d1848 /fs/ufs/util.c
downloadlinux-stable-cf9610f9116d55c5a66ef9f1faecacabd93a9322.tar.gz
linux-stable-cf9610f9116d55c5a66ef9f1faecacabd93a9322.zip
Merge tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrlgrafted
Pull pin control updates from Linus Walleij: "Core changes: - Use the non-blocking mux_state_try_select() in the generic MUX pin control back-end - Free pin maps on pinctrl_generic_to_map() failure in the core helpers New hardware pin control: - Qualcomm Maili TLMM SoC, PMG1110 PMIC, and Eliza LPASS LPI TLMM SoC (this is for the low power audio, LPASS = Low Power Audio SubSystem portions) - Upboard support on top of the Intel pin controller - Apple T6030 and T6031 support (just compatible strings) - Samsung Exynos 8855 SoC - Mediatek MT6858 SoC - Rockchip RK3308B and RV1106 SoCs - Airoha EN7523 and AN7563 SoCs Improvements: - Qualcomm TLMM GPIOs are unconditionally marked as wakeup capable - Qualcomm improvements on top of the Qualcomm PDC (power domain controller) irqchip improvements from tglx:s tree - Qualcomm IPQ806x and IPQ9650 non-urgent pin grop fixups - The NPCM8xx driver has been put into shape fixing many pin and group definitions - Some non-urgent Tegra 264 pin assignments are fixed up - Some non-urgent fixups to Airoha AN7581 and AN7583 registers and pin assignments, missing features etc" * tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (130 commits) dt-bindings: pinctrl: Convert TI DA850 pupd to DT schema pinctrl: meson: sync some modify from A4 pinctrl: meson: a4: Add input enable pin configuration pinctrl: realtek: rtd1625: remove unused group name spdif_sel pinctrl: realtek: rtd1625: fix base_bit for VE4 GPIO 13 dt-bindings: pinctrl: microchip,pic32mzda-pinctrl: Convert to DT schema Revert "Merge branch 'ib-rsk7204' into devel" pinctrl: rockchip: Add RV1106 pinctrl support dt-bindings: pinctrl: rockchip: Add RV1106 compatible pinctrl: rockchip: Decode drive strength in the get function pinctrl: fix PINCTRL_GENERIC_MUX not always being selectable pinctrl: airoha: add support of an7563 SoC dt-bindings: pinctrl: airoha: add support of an7563 pin controller pinctrl: airoha: try to find chip scu node by phandle first pinctrl: airoha: add support of en7523 SoC dt-bindings: pinctrl: airoha: add support of en7523 pin controller pinctrl: airoha: an7583: add support for olt pinmux pinctrl: airoha: an7583: add support for pon_alt pinmux pinctrl: airoha: an7583: add support for npu_uart pinmux dt-bindings: pinctrl: airoha: an7583: add missed features ...
Diffstat (limited to 'fs/ufs/util.c')
-rw-r--r--fs/ufs/util.c223
1 files changed, 223 insertions, 0 deletions
diff --git a/fs/ufs/util.c b/fs/ufs/util.c
new file mode 100644
index 000000000..dff6f7461
--- /dev/null
+++ b/fs/ufs/util.c
@@ -0,0 +1,223 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * linux/fs/ufs/util.c
+ *
+ * Copyright (C) 1998
+ * Daniel Pirkl <daniel.pirkl@email.cz>
+ * Charles University, Faculty of Mathematics and Physics
+ */
+
+#include <linux/string.h>
+#include <linux/slab.h>
+#include <linux/buffer_head.h>
+
+#include "ufs_fs.h"
+#include "ufs.h"
+#include "swab.h"
+#include "util.h"
+
+struct ufs_buffer_head * _ubh_bread_ (struct ufs_sb_private_info * uspi,
+ struct super_block *sb, u64 fragment, u64 size)
+{
+ struct ufs_buffer_head * ubh;
+ unsigned i, j ;
+ u64 count = 0;
+ if (size & ~uspi->s_fmask)
+ return NULL;
+ count = size >> uspi->s_fshift;
+ if (count > UFS_MAXFRAG)
+ return NULL;
+ ubh = kmalloc_obj(struct ufs_buffer_head, GFP_NOFS);
+ if (!ubh)
+ return NULL;
+ ubh->fragment = fragment;
+ ubh->count = count;
+ for (i = 0; i < count; i++)
+ if (!(ubh->bh[i] = sb_bread(sb, fragment + i)))
+ goto failed;
+ for (; i < UFS_MAXFRAG; i++)
+ ubh->bh[i] = NULL;
+ return ubh;
+failed:
+ for (j = 0; j < i; j++)
+ brelse (ubh->bh[j]);
+ kfree(ubh);
+ return NULL;
+}
+
+struct ufs_buffer_head * ubh_bread_uspi (struct ufs_sb_private_info * uspi,
+ struct super_block *sb, u64 fragment, u64 size)
+{
+ unsigned i, j;
+ u64 count = 0;
+ if (size & ~uspi->s_fmask)
+ return NULL;
+ count = size >> uspi->s_fshift;
+ if (count <= 0 || count > UFS_MAXFRAG)
+ return NULL;
+ USPI_UBH(uspi)->fragment = fragment;
+ USPI_UBH(uspi)->count = count;
+ for (i = 0; i < count; i++)
+ if (!(USPI_UBH(uspi)->bh[i] = sb_bread(sb, fragment + i)))
+ goto failed;
+ for (; i < UFS_MAXFRAG; i++)
+ USPI_UBH(uspi)->bh[i] = NULL;
+ return USPI_UBH(uspi);
+failed:
+ for (j = 0; j < i; j++)
+ brelse (USPI_UBH(uspi)->bh[j]);
+ return NULL;
+}
+
+void ubh_brelse (struct ufs_buffer_head * ubh)
+{
+ unsigned i;
+ if (!ubh)
+ return;
+ for (i = 0; i < ubh->count; i++)
+ brelse (ubh->bh[i]);
+ kfree (ubh);
+}
+
+void ubh_brelse_uspi (struct ufs_sb_private_info * uspi)
+{
+ unsigned i;
+ if (!USPI_UBH(uspi))
+ return;
+ for ( i = 0; i < USPI_UBH(uspi)->count; i++ ) {
+ brelse (USPI_UBH(uspi)->bh[i]);
+ USPI_UBH(uspi)->bh[i] = NULL;
+ }
+}
+
+void ubh_mark_buffer_dirty (struct ufs_buffer_head * ubh)
+{
+ unsigned i;
+ if (!ubh)
+ return;
+ for ( i = 0; i < ubh->count; i++ )
+ mark_buffer_dirty (ubh->bh[i]);
+}
+
+void ubh_sync_block(struct ufs_buffer_head *ubh)
+{
+ if (ubh) {
+ unsigned i;
+
+ for (i = 0; i < ubh->count; i++)
+ write_dirty_buffer(ubh->bh[i], 0);
+
+ for (i = 0; i < ubh->count; i++)
+ wait_on_buffer(ubh->bh[i]);
+ }
+}
+
+void ubh_bforget (struct ufs_buffer_head * ubh)
+{
+ unsigned i;
+ if (!ubh)
+ return;
+ for ( i = 0; i < ubh->count; i++ ) if ( ubh->bh[i] )
+ bforget (ubh->bh[i]);
+}
+
+int ubh_buffer_dirty (struct ufs_buffer_head * ubh)
+{
+ unsigned i;
+ unsigned result = 0;
+ if (!ubh)
+ return 0;
+ for ( i = 0; i < ubh->count; i++ )
+ result |= buffer_dirty(ubh->bh[i]);
+ return result;
+}
+
+dev_t
+ufs_get_inode_dev(struct super_block *sb, struct ufs_inode_info *ufsi)
+{
+ __u32 fs32;
+ dev_t dev;
+
+ if ((UFS_SB(sb)->s_flags & UFS_ST_MASK) == UFS_ST_SUNx86)
+ fs32 = fs32_to_cpu(sb, ufsi->i_u1.i_data[1]);
+ else
+ fs32 = fs32_to_cpu(sb, ufsi->i_u1.i_data[0]);
+ switch (UFS_SB(sb)->s_flags & UFS_ST_MASK) {
+ case UFS_ST_SUNx86:
+ case UFS_ST_SUN:
+ if ((fs32 & 0xffff0000) == 0 ||
+ (fs32 & 0xffff0000) == 0xffff0000)
+ dev = old_decode_dev(fs32 & 0x7fff);
+ else
+ dev = MKDEV(sysv_major(fs32), sysv_minor(fs32));
+ break;
+
+ default:
+ dev = old_decode_dev(fs32);
+ break;
+ }
+ return dev;
+}
+
+void
+ufs_set_inode_dev(struct super_block *sb, struct ufs_inode_info *ufsi, dev_t dev)
+{
+ __u32 fs32;
+
+ switch (UFS_SB(sb)->s_flags & UFS_ST_MASK) {
+ case UFS_ST_SUNx86:
+ case UFS_ST_SUN:
+ fs32 = sysv_encode_dev(dev);
+ if ((fs32 & 0xffff8000) == 0) {
+ fs32 = old_encode_dev(dev);
+ }
+ break;
+
+ default:
+ fs32 = old_encode_dev(dev);
+ break;
+ }
+ if ((UFS_SB(sb)->s_flags & UFS_ST_MASK) == UFS_ST_SUNx86)
+ ufsi->i_u1.i_data[1] = cpu_to_fs32(sb, fs32);
+ else
+ ufsi->i_u1.i_data[0] = cpu_to_fs32(sb, fs32);
+}
+
+/**
+ * ufs_get_locked_folio() - locate, pin and lock a pagecache folio, if not exist
+ * read it from disk.
+ * @mapping: the address_space to search
+ * @index: the page index
+ *
+ * Locates the desired pagecache folio, if not exist we'll read it,
+ * locks it, increments its reference
+ * count and returns its address.
+ *
+ */
+struct folio *ufs_get_locked_folio(struct address_space *mapping,
+ pgoff_t index)
+{
+ struct inode *inode = mapping->host;
+ struct folio *folio = filemap_lock_folio(mapping, index);
+ if (IS_ERR(folio)) {
+ folio = read_mapping_folio(mapping, index, NULL);
+
+ if (IS_ERR(folio)) {
+ printk(KERN_ERR "ufs_change_blocknr: read_mapping_folio error: ino %llu, index: %lu\n",
+ mapping->host->i_ino, index);
+ return folio;
+ }
+
+ folio_lock(folio);
+
+ if (unlikely(folio->mapping == NULL)) {
+ /* Truncate got there first */
+ folio_unlock(folio);
+ folio_put(folio);
+ return NULL;
+ }
+ }
+ if (!folio_buffers(folio))
+ create_empty_buffers(folio, 1 << inode->i_blkbits, 0);
+ return folio;
+}