floppy: add defines for sizes of cmd & reply buffers of floppy_raw_cmd

Use FD_RAW_CMD_SIZE, FD_RAW_REPLY_SIZE defines instead of magic numbers for cmd & reply buffers of struct floppy_raw_cmd. Remove local to floppy.c MAX_REPLIES define, as it is now FD_RAW_REPLY_SIZE. FD_RAW_CMD_FULLSIZE added as we allow command to also fill reply_count and reply fields.

Denis Efremov committed 6 years ago

Commit bd10a5f1 parent 9c4c5a22 files · +17 −16Browse files

Showing the changes to include/uapi/linux (1 of 2 files). Show all

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include/uapi/linux/fd.h+12−2

@@ -360,10 +360,20 @@ struct floppy_raw_cmd { · 359 unmodified lines
360	360	int buffer_length; /* length of allocated buffer */
361	361
362	362	unsigned char rate;
	363	+
	364	+#define FD_RAW_CMD_SIZE 16
	365	+#define FD_RAW_REPLY_SIZE 16
	366	+#define FD_RAW_CMD_FULLSIZE (FD_RAW_CMD_SIZE + 1 + FD_RAW_REPLY_SIZE)
	367	+
	368	+ /* The command may take up the space initially intended for the reply
	369	+ * and the reply count. Needed for long 82078 commands such as RESTORE,
	370	+ * which takes 17 command bytes.
	371	+ */
	372	+
363	373	unsigned char cmd_count;
364		− unsigned char cmd[16];
	374	+ unsigned char cmd[FD_RAW_CMD_SIZE];
365	375	unsigned char reply_count;
366		− unsigned char reply[16];
	376	+ unsigned char reply[FD_RAW_REPLY_SIZE];
367	377	int track;
368	378	int resultcode;
369	379