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Fix to linux kernel 6.6.31 #14

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Fix to linux kernel 6.6.31 #14

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6 changes: 3 additions & 3 deletions 03_read_write/read_write.c
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Original file line number Diff line number Diff line change
Expand Up @@ -28,7 +28,7 @@ static ssize_t driver_read(struct file *File, char *user_buffer, size_t count, l
int to_copy, not_copied, delta;

/* Get amount of data to copy */
to_copy = min(count, buffer_pointer);
to_copy = umin(count, buffer_pointer);

/* Copy data to user */
not_copied = copy_to_user(user_buffer, buffer, to_copy);
Expand All @@ -46,7 +46,7 @@ static ssize_t driver_write(struct file *File, const char *user_buffer, size_t c
int to_copy, not_copied, delta;

/* Get amount of data to copy */
to_copy = min(count, sizeof(buffer));
to_copy = umin(count, sizeof(buffer));

/* Copy data to user */
not_copied = copy_from_user(buffer, user_buffer, to_copy);
Expand Down Expand Up @@ -97,7 +97,7 @@ static int __init ModuleInit(void) {
printk("read_write - Device Nr. Major: %d, Minor: %d was registered!\n", my_device_nr >> 20, my_device_nr & 0xfffff);

/* Create device class */
if((my_class = class_create(THIS_MODULE, DRIVER_CLASS)) == NULL) {
if((my_class = class_create(DRIVER_CLASS)) == NULL) {
printk("Device class can not be created!\n");
goto ClassError;
}
Expand Down