ata: libata-scsi: fix ata_dsm_trim_pages() kernel-docgrafted

make htmldocs fails with:

  Documentation/driver-api/libata:604: ./drivers/ata/libata-scsi.c:2301:
  ERROR: Unexpected indentation. [docutils]

The Return: section of ata_dsm_trim_pages() ends its first sentence with
a colon and continues with an indented bullet list. reStructuredText
requires a blank line before an indented block, so docutils chokes on
the list.

Simply adding the missing blank line does not work either: Return: is a
kernel-doc "special section", which is terminated by the first blank
line, so the bullet list would end up in the Description section,
detached from the sentence introducing it.

Spell the two bounds out as prose instead, so that the Return: section
stays self-contained. Documentation-only change.

Fixes: e64e6b5dc867 ("ata: libata-scsi: scale DSM TRIM payload by MAX PAGES PER DSM COMMAND")
Reported-by: Thomas Huth <thuth@redhat.com>
Closes: https://lore.kernel.org/linux-ide/b0a0b8e8-cc4f-4c7b-8bc5-fee0712d405a@redhat.com/
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Link: https://lore.kernel.org/r/20260916130031.29990-2-cassel@kernel.org
Signed-off-by: Niklas Cassel <cassel@kernel.org>

1 files changed, 92 insertions, 0 deletions

diff --git a/arch/mips/dec/wbflush.c b/arch/mips/dec/wbflush.c
new file mode 100644
index 000000000..dad64d178
--- /dev/null
+++ b/arch/mips/dec/wbflush.c
@@ -0,0 +1,92 @@
+/*
+ * Setup the right wbflush routine for the different DECstations.
+ *
+ * Created with information from:
+ *	DECstation 3100 Desktop Workstation Functional Specification
+ *	DECstation 5000/200 KN02 System Module Functional Specification
+ *	mipsel-linux-objdump --disassemble vmunix | grep "wbflush" :-)
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1998 Harald Koerfgen
+ * Copyright (C) 2002 Maciej W. Rozycki
+ */
+
+#include <linux/export.h>
+#include <linux/init.h>
+
+#include <asm/bootinfo.h>
+#include <asm/wbflush.h>
+#include <asm/barrier.h>
+
+static void wbflush_kn01(void);
+static void wbflush_kn210(void);
+static void wbflush_mips(void);
+
+void (*__wbflush) (void);
+
+void __init wbflush_setup(void)
+{
+	switch (mips_machtype) {
+	case MACH_DS23100:
+	case MACH_DS5000_200:	/* DS5000 3max */
+		__wbflush = wbflush_kn01;
+		break;
+	case MACH_DS5100:	/* DS5100 MIPSMATE */
+		__wbflush = wbflush_kn210;
+		break;
+	case MACH_DS5000_1XX:	/* DS5000/100 3min */
+	case MACH_DS5000_XX:	/* Personal DS5000/2x */
+	case MACH_DS5000_2X0:	/* DS5000/240 3max+ */
+	case MACH_DS5900:	/* DS5900 bigmax */
+	default:
+		__wbflush = wbflush_mips;
+		break;
+	}
+}
+
+/*
+ * For the DS3100 and DS5000/200 the R2020/R3220 writeback buffer functions
+ * as part of Coprocessor 0.
+ */
+static void wbflush_kn01(void)
+{
+    asm(".set\tpush\n\t"
+	".set\tnoreorder\n\t"
+	"1:\tbc0f\t1b\n\t"
+	"nop\n\t"
+	".set\tpop");
+}
+
+/*
+ * For the DS5100 the writeback buffer seems to be a part of Coprocessor 3.
+ * But CP3 has to enabled first.
+ */
+static void wbflush_kn210(void)
+{
+    asm(".set\tpush\n\t"
+	".set\tnoreorder\n\t"
+	"mfc0\t$2,$12\n\t"
+	"lui\t$3,0x8000\n\t"
+	"or\t$3,$2,$3\n\t"
+	"mtc0\t$3,$12\n\t"
+	"nop\n"
+	"1:\tbc3f\t1b\n\t"
+	"nop\n\t"
+	"mtc0\t$2,$12\n\t"
+	"nop\n\t"
+	".set\tpop"
+	: : : "$2", "$3");
+}
+
+/*
+ * I/O ASIC systems use a standard writeback buffer that gets flushed
+ * upon an uncached read.
+ */
+static void wbflush_mips(void)
+{
+	__fast_iob();
+}
+EXPORT_SYMBOL(__wbflush);