Revert "driver: zio: calibrate: CS7 supports newer functions."

This reverts commit 25f66f51. Turns out that even though Red-Hat backported "timer_setup()" on CS7, it is not working well and corrupting the memory somewhere. Thus, we should stick to the API provided by vanilla kernel.

Revert "driver: zio: calibrate: CS7 supports newer functions."
This reverts commit 25f66f51. Turns out that even though Red-Hat backported "timer_setup()" on CS7, it is not working well and corrupting the memory somewhere. Thus, we should stick to the API provided by vanilla kernel.
041c7335 · Vaibhav Gupta · 6af701eb · 041c7335
Commit 041c7335 authored Nov 29, 2022 by Vaibhav Gupta
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calibrate.c software/kernel/calibrate.c +7 -7

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--- a/software/kernel/calibrate.c
+++ b/software/kernel/calibrate.c
@@ -207,17 +207,17 @@ int fd_calibrate_outputs(struct fd_dev *fd)
 /**
 * fd_update_calibration
 * Called from a timer any few seconds. It updates the Delay line tap
- * according to the measured temperature.
- *
- * As per tovalds/linux, the kernel version below 4.14 support
- * 	fd_update_calibration(unsigned long arg)
- * and not the other one. But even though CS7 is 3.10 based, patches might
- * have been backported, and it supports the other one.
+ * according to the measured temperature
 */
-
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
+void fd_update_calibration(unsigned long arg)
+{
+	struct fd_dev *fd = (void *)arg;
+#else
 void fd_update_calibration(struct timer_list *arg)
 {
 	struct fd_dev *fd = from_timer(fd, arg, temp_timer);
+#endif
 	int ch, fitted, new;

 	fd_read_temp(fd, 0 /* not verbose */);