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Remove kernel version check from rtc code

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It should work with all currently supported kernels (>= 2.2.0).
This commit is contained in:
Miroslav Lichvar 2011-06-06 21:32:38 +02:00
parent eca08a281c
commit 6a2a837ede
3 changed files with 0 additions and 68 deletions
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56
rtc_linux.c
View file

@ -507,62 +507,6 @@ write_coefs_to_file(int valid,time_t ref_time,double offset,double rate)
int
RTC_Linux_Initialise(void)
{
int major, minor, patch;
/* Check whether we can support the real time clock.
Linux 1.2.x - haven't checked yet
Linux 1.3.x - don't know, haven't got a system to look at
Linux 2.0.x - For x<=31, using any variant of the adjtimex() call
sets the kernel into a mode where the RTC was updated every 11
minutes. The only way to escape this is to use settimeofday().
Since we need to have sole control over the RTC to be able to
measure its drift rate, and there is no 'notify' callback to warn
you that the kernel is going to do this, I can't see a way to
support this.
Linux 2.0.x - For x>=32 the adjtimex()/RTC behaviour was
modified, so that as long as the STA_UNSYNC flag is set the RTC
is left alone. This is the mode we exploit here, so that the RTC
continues to go its own sweet way, unless we make updates to it
from this module.
Linux 2.1.x - don't know, haven't got a system to look at.
Linux 2.2.x, 2.3.x and 2.4.x are believed to be OK for all
patch levels
*/
SYS_Linux_GetKernelVersion(&major, &minor, &patch);
/* Obviously this test can get more elaborate when we know about
more system types. */
if (major != 2) {
return 0;
} else {
switch (minor) {
case 0:
if (patch <= 31) {
return 0;
}
break;
case 1:
return 0;
break;
case 2:
case 3:
case 4:
case 5:
case 6:
case 7:
case 8:
break; /* OK for all patch levels */
}
}
/* Setup details depending on configuration options */
setup_config();

10
sys_linux.c
View file

@ -1087,16 +1087,6 @@ SYS_Linux_Finalise(void)
/* ================================================== */
void
SYS_Linux_GetKernelVersion(int *major, int *minor, int *patchlevel)
{
*major = version_major;
*minor = version_minor;
*patchlevel = version_patchlevel;
}
/* ================================================== */
#ifdef FEAT_LINUXCAPS
void
SYS_Linux_DropRoot(char *user)

2
sys_linux.h
View file

@ -31,8 +31,6 @@ extern void SYS_Linux_Initialise(void);
extern void SYS_Linux_Finalise(void);
extern void SYS_Linux_GetKernelVersion(int *major, int *minor, int *patchlevel);
extern void SYS_Linux_DropRoot(char *user);
extern void SYS_Linux_MemLockAll(int LockAll);