Klagarge/MSE-CSEL
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fix(lab03): finish ex 3

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fastium
2026-04-02 20:05:31 +02:00
parent e3f234c088
commit 2130c96ada
1 changed files with 4 additions and 4 deletions
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8
src/02-driver/charachter-oriented/skeleton.c
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@@ -75,7 +75,6 @@ ssize_t skeleton_read(struct file* f, char* __user buf, size_t count, loff_t* of
pr_info("Read file\n"); pr_info("Read file\n");
struct my_device_data *my_data = (struct my_device_data *) f->private_data;
ssize_t len = min(BUFFER_SIZE - ((size_t)*off), count); ssize_t len = min(BUFFER_SIZE - ((size_t)*off), count);
if (len <= 0) { if (len <= 0) {
@@ -99,7 +98,6 @@ ssize_t skeleton_write(struct file* f, const char* __user buf, size_t count, lof
pr_info("Write file\n"); pr_info("Write file\n");
struct my_device_data *my_data = (struct my_device_data *) f->private_data;
ssize_t len = min(BUFFER_SIZE - ((size_t)*off), count); ssize_t len = min(BUFFER_SIZE - ((size_t)*off), count);
if (len <= 0) { if (len <= 0) {
@@ -157,8 +155,9 @@ static int __init skeleton_init(void) {
} }
// allocate the array of buffer // allocate the array of buffer
int i;
devs.buffers = kzalloc(sizeof(char*) * instances, GFP_KERNEL); devs.buffers = kzalloc(sizeof(char*) * instances, GFP_KERNEL);
for (int i = 0; i < instances; i++) { for (i = 0; i < instances; i++) {
devs.buffers[i] = kzalloc(BUFFER_SIZE, GFP_KERNEL); devs.buffers[i] = kzalloc(BUFFER_SIZE, GFP_KERNEL);
} }
@@ -175,7 +174,8 @@ static void __exit skeleton_exit(void) {
cdev_del(&devs.cdev); cdev_del(&devs.cdev);
unregister_chrdev_region(devs.dev_t, instances); unregister_chrdev_region(devs.dev_t, instances);
for(int i=0; i < instances; i++) { int i;
for(i=0; i < instances; i++) {
kfree(devs.buffers[i]); kfree(devs.buffers[i]);
} }
kfree(devs.buffers); kfree(devs.buffers);