tty: sysrq: switch sysrq handlers from int to u8

The passed parameter to sysrq handlers is a key (a character). So change the type from 'int' to 'u8'. Let it specifically be 'u8' for two reasons: * unsigned: unsigned values come from the upper layers (devices) and the tty layer assumes unsigned on most places, and * 8-bit: as that what's supposed to be one day in all the layers built on the top of tty. (Currently, we use mostly 'unsigned char' and somewhere still only 'char'. (But that also translates to the former thanks to -funsigned-char.))

Jiri Slaby committed 3 years ago

Commit bcb48181 parent 00ef7ef11 files · +31 −31Browse files

Showing the changes to kernel/debug (1 of 11 files). Show all

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kernel/debug/debug_core.c+1−1

@@ -968,7 +968,7 @@ static int __init opt_kgdb_con(char *str) · 967 unmodified lines
968	968	early_param("kgdbcon", opt_kgdb_con);
969	969
970	970	#ifdef CONFIG_MAGIC_SYSRQ
971		−static void sysrq_handle_dbg(int key)
	971	+static void sysrq_handle_dbg(u8 key)
972	972	{
973	973	if (!dbg_io_ops) {
974	974	pr_crit("ERROR: No KGDB I/O module available\n");