xz: fix comments and coding style

- Fix comments that were no longer in sync with the code below them.
- Fix language errors.
- Fix coding style.

Link: https://lkml.kernel.org/r/20240721133633.47721-5-lasse.collin@tukaani.org
Signed-off-by: Lasse Collin <lasse.collin@tukaani.org>
Reviewed-by: Sam James <sam@gentoo.org>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Emil Renner Berthing <emil.renner.berthing@canonical.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Joel Stanley <joel@jms.id.au>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Jubin Zhong <zhongjubin@huawei.com>
Cc: Jules Maselbas <jmaselbas@zdiv.net>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Rui Li <me@lirui.org>
Cc: Simon Glass <sjg@chromium.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

2 files changed, 12 insertions, 11 deletions

diff --git a/lib/decompress_unxz.c b/lib/decompress_unxz.c
index 34bb7efc0412..46aa3be13fc5 100644
--- a/lib/decompress_unxz.c
+++ b/lib/decompress_unxz.c
@@ -102,7 +102,7 @@
 #ifdef STATIC
 #	define XZ_PREBOOT
 #else
-#include <linux/decompress/unxz.h>
+#	include <linux/decompress/unxz.h>
 #endif
 #ifdef __KERNEL__
 #	include <linux/decompress/mm.h>
@@ -219,7 +219,7 @@ void *memmove(void *dest, const void *src, size_t size)
 #endif
 
 /*
- * Since we need memmove anyway, would use it as memcpy too.
+ * Since we need memmove anyway, we could use it as memcpy too.
  * Commented out for now to avoid breaking things.
  */
 /*
@@ -389,17 +389,17 @@ error_alloc_state:
 }
 
 /*
- * This macro is used by architecture-specific files to decompress
+ * This function is used by architecture-specific files to decompress
  * the kernel image.
  */
 #ifdef XZ_PREBOOT
-STATIC int INIT __decompress(unsigned char *buf, long len,
-			   long (*fill)(void*, unsigned long),
-			   long (*flush)(void*, unsigned long),
-			   unsigned char *out_buf, long olen,
-			   long *pos,
-			   void (*error)(char *x))
+STATIC int INIT __decompress(unsigned char *in, long in_size,
+			     long (*fill)(void *dest, unsigned long size),
+			     long (*flush)(void *src, unsigned long size),
+			     unsigned char *out, long out_size,
+			     long *in_used,
+			     void (*error)(char *x))
 {
-	return unxz(buf, len, fill, flush, out_buf, pos, error);
+	return unxz(in, in_size, fill, flush, out, in_used, error);
 }
 #endif
diff --git a/lib/xz/Kconfig b/lib/xz/Kconfig
index aef086a6bf2f..6b80453d8f54 100644
--- a/lib/xz/Kconfig
+++ b/lib/xz/Kconfig
@@ -5,7 +5,8 @@ config XZ_DEC
 	help
 	  LZMA2 compression algorithm and BCJ filters are supported using
 	  the .xz file format as the container. For integrity checking,
-	  CRC32 is supported. See Documentation/staging/xz.rst for more information.
+	  CRC32 is supported. See Documentation/staging/xz.rst for more
+	  information.
 
 if XZ_DEC