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param: update drivers/char/ipmi/ipmi_watchdog.c to new scheme

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This is one of the most interesting users of module parameters in the
tree, so weaning it off the old-style non-const module_param_call
scheme is a useful exercise.

I was confused by set_param_int/get_param_int (vs. the normal
param_set_int and param_get_int), so I renamed set_param_int to
set_param_timeout, and re-used param_get_int directly instead of
get_param_int.  I also implemented param_check_wdog_ifnum and
param_check_timeout, so now the ifnum_to_use and timeout/pretimeout
parameters can just use plain module_param().

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Corey Minyard <minyard@acm.org>
Cc: openipmi-developer@lists.sourceforge.net
This commit is contained in:
Rusty Russell 2010-08-11 23:04:37 -06:00
parent 886275ce41
commit c8ba6c52e1
1 changed files with 27 additions and 15 deletions
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42
drivers/char/ipmi/ipmi_watchdog.c
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@ -196,7 +196,7 @@ static void ipmi_unregister_watchdog(int ipmi_intf);
*/
static int start_now;
static int set_param_int(const char *val, struct kernel_param *kp)
static int set_param_timeout(const char *val, const struct kernel_param *kp)
{
char *endp;
int l;
@ -215,10 +215,11 @@ static int set_param_int(const char *val, struct kernel_param *kp)
return rv;
}
static int get_param_int(char *buffer, struct kernel_param *kp)
{
return sprintf(buffer, "%i", *((int *)kp->arg));
}
static struct kernel_param_ops param_ops_timeout = {
.set = set_param_timeout,
.get = param_get_int,
};
#define param_check_timeout param_check_int
typedef int (*action_fn)(const char *intval, char *outval);
@ -227,7 +228,7 @@ static int preaction_op(const char *inval, char *outval);
static int preop_op(const char *inval, char *outval);
static void check_parms(void);
static int set_param_str(const char *val, struct kernel_param *kp)
static int set_param_str(const char *val, const struct kernel_param *kp)
{
action_fn fn = (action_fn) kp->arg;
int rv = 0;
@ -251,7 +252,7 @@ static int set_param_str(const char *val, struct kernel_param *kp)
return rv;
}
static int get_param_str(char *buffer, struct kernel_param *kp)
static int get_param_str(char *buffer, const struct kernel_param *kp)
{
action_fn fn = (action_fn) kp->arg;
int rv;
@ -263,7 +264,7 @@ static int get_param_str(char *buffer, struct kernel_param *kp)
}
static int set_param_wdog_ifnum(const char *val, struct kernel_param *kp)
static int set_param_wdog_ifnum(const char *val, const struct kernel_param *kp)
{
int rv = param_set_int(val, kp);
if (rv)
@ -276,27 +277,38 @@ static int set_param_wdog_ifnum(const char *val, struct kernel_param *kp)
return 0;
}
module_param_call(ifnum_to_use, set_param_wdog_ifnum, get_param_int,
&ifnum_to_use, 0644);
static struct kernel_param_ops param_ops_wdog_ifnum = {
.set = set_param_wdog_ifnum,
.get = param_get_int,
};
#define param_check_wdog_ifnum param_check_int
static struct kernel_param_ops param_ops_str = {
.set = set_param_str,
.get = get_param_str,
};
module_param(ifnum_to_use, wdog_ifnum, 0644);
MODULE_PARM_DESC(ifnum_to_use, "The interface number to use for the watchdog "
"timer. Setting to -1 defaults to the first registered "
"interface");
module_param_call(timeout, set_param_int, get_param_int, &timeout, 0644);
module_param(timeout, timeout, 0644);
MODULE_PARM_DESC(timeout, "Timeout value in seconds.");
module_param_call(pretimeout, set_param_int, get_param_int, &pretimeout, 0644);
module_param(pretimeout, timeout, 0644);
MODULE_PARM_DESC(pretimeout, "Pretimeout value in seconds.");
module_param_call(action, set_param_str, get_param_str, action_op, 0644);
module_param_cb(action, &param_ops_str, action_op, 0644);
MODULE_PARM_DESC(action, "Timeout action. One of: "
"reset, none, power_cycle, power_off.");
module_param_call(preaction, set_param_str, get_param_str, preaction_op, 0644);
module_param_cb(preaction, &param_ops_str, preaction_op, 0644);
MODULE_PARM_DESC(preaction, "Pretimeout action. One of: "
"pre_none, pre_smi, pre_nmi, pre_int.");
module_param_call(preop, set_param_str, get_param_str, preop_op, 0644);
module_param_cb(preop, &param_ops_str, preop_op, 0644);
MODULE_PARM_DESC(preop, "Pretimeout driver operation. One of: "
"preop_none, preop_panic, preop_give_data.");