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make it compatible cross different kernel versions #10

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make it compatible cross different kernel versions #10

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10 changes: 9 additions & 1 deletion Chapter03/std-timer.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2,10 +2,15 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/timer.h>
#include <linux/version.h>

static struct timer_list my_timer;

#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 15, 0)
void my_timer_callback( struct timer_list * timer)
#else
void my_timer_callback( unsigned long data )
#endif
{
pr_info( "%s called (%ld).\n", __FUNCTION__, jiffies );
}
Expand All @@ -15,9 +20,12 @@ static int __init my_init( void )
int retval;
pr_info("Timer module loaded\n");

#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 15, 0)
timer_setup( &my_timer, my_timer_callback, 0 );
#else
setup_timer( &my_timer, my_timer_callback, 0 );
#endif
pr_info( "Setup timer to fire in 300ms (%ld)\n", jiffies );

retval = mod_timer( &my_timer, jiffies + msecs_to_jiffies(300) );
if (retval)
pr_info("Timer firing failed\n");
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2 changes: 1 addition & 1 deletion Chapter07/ee24lc512.c
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Expand Up @@ -10,7 +10,7 @@
#include <linux/mutex.h>
#include <linux/i2c.h>
#include <linux/delay.h>
#include <asm/uaccess.h>
#include <linux/uaccess.h>


/*
Expand Down