[PATCH 5.15 259/297] net: ethtool: Fix documentation of ethtool_sprintf()

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5.15-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Andrew Lunn <andrew@xxxxxxx>

commit f55d8e60f10909dbc5524e261041e1d28d7d20d8 upstream.

This function takes a pointer to a pointer, unlike sprintf() which is
passed a plain pointer. Fix up the documentation to make this clear.

Fixes: 7888fe53b706 ("ethtool: Add common function for filling out strings")
Cc: Alexander Duyck <alexanderduyck@xxxxxx>
Cc: Justin Stitt <justinstitt@xxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Andrew Lunn <andrew@xxxxxxx>
Reviewed-by: Justin Stitt <justinstitt@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20231028192511.100001-1-andrew@xxxxxxx
Signed-off-by: Paolo Abeni <pabeni@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 include/linux/ethtool.h |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/include/linux/ethtool.h
+++ b/include/linux/ethtool.h
@@ -781,10 +781,10 @@ int ethtool_get_phc_vclocks(struct net_d
 
 /**
  * ethtool_sprintf - Write formatted string to ethtool string data
- * @data: Pointer to start of string to update
+ * @data: Pointer to a pointer to the start of string to update
  * @fmt: Format of string to write
  *
- * Write formatted string to data. Update data to point at start of
+ * Write formatted string to *data. Update *data to point at start of
  * next string.
  */
 extern __printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...);






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