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9289bfe59c
Sparse[1] is a semantic parser, capable of finding out the potential problems of Linux kernel code. This patch fixed the warnings. [1] https://www.kernel.org/doc/html/latest/dev-tools/sparse.html
45 lines
975 B
C
45 lines
975 B
C
/*
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* example_tasklet.c
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*/
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#include <linux/delay.h>
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#include <linux/interrupt.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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/* Macro DECLARE_TASKLET_OLD exists for compatibiity.
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* See https://lwn.net/Articles/830964/
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*/
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#ifndef DECLARE_TASKLET_OLD
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#define DECLARE_TASKLET_OLD(arg1, arg2) DECLARE_TASKLET(arg1, arg2, 0L)
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#endif
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static void tasklet_fn(unsigned long data)
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{
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pr_info("Example tasklet starts\n");
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mdelay(5000);
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pr_info("Example tasklet ends\n");
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}
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static DECLARE_TASKLET_OLD(mytask, tasklet_fn);
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static int example_tasklet_init(void)
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{
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pr_info("tasklet example init\n");
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tasklet_schedule(&mytask);
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mdelay(200);
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pr_info("Example tasklet init continues...\n");
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return 0;
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}
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static void example_tasklet_exit(void)
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{
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pr_info("tasklet example exit\n");
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tasklet_kill(&mytask);
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}
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module_init(example_tasklet_init);
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module_exit(example_tasklet_exit);
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MODULE_DESCRIPTION("Tasklet example");
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MODULE_LICENSE("GPL");
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