Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=78a62d2c9817dc1adfc563f5a7654df2c89be416
Commit: 78a62d2c9817dc1adfc563f5a7654df2c89be416
Parent: 4e9baad8f5cb2040e802eff484fad7e721b21c0b
Author: Nicolas Boichat <[EMAIL PROTECTED]>
AuthorDate: Tue May 8 17:22:01 2007 +0200
Committer: Jean Delvare <[EMAIL PROTECTED]>
CommitDate: Tue May 8 17:22:01 2007 +0200
i386: Use functions from library in msr driver
Use safe MSR functions provided by arch/*/lib/msr-on-cpu.c in
arch/i386/kernel/msr.c.
Signed-off-by: Nicolas Boichat <[EMAIL PROTECTED]>
Cc: H. Peter Anvin <[EMAIL PROTECTED]>
Signed-off-by: Jean Delvare <[EMAIL PROTECTED]>
---
arch/i386/kernel/msr.c | 106 ++----------------------------------------------
1 files changed, 4 insertions(+), 102 deletions(-)
diff --git a/arch/i386/kernel/msr.c b/arch/i386/kernel/msr.c
index bcaa6e9..8cd0a91 100644
--- a/arch/i386/kernel/msr.c
+++ b/arch/i386/kernel/msr.c
@@ -45,104 +45,6 @@
static struct class *msr_class;
-static inline int wrmsr_eio(u32 reg, u32 eax, u32 edx)
-{
- int err;
-
- err = wrmsr_safe(reg, eax, edx);
- if (err)
- err = -EIO;
- return err;
-}
-
-static inline int rdmsr_eio(u32 reg, u32 *eax, u32 *edx)
-{
- int err;
-
- err = rdmsr_safe(reg, eax, edx);
- if (err)
- err = -EIO;
- return err;
-}
-
-#ifdef CONFIG_SMP
-
-struct msr_command {
- int err;
- u32 reg;
- u32 data[2];
-};
-
-static void msr_smp_wrmsr(void *cmd_block)
-{
- struct msr_command *cmd = (struct msr_command *)cmd_block;
-
- cmd->err = wrmsr_eio(cmd->reg, cmd->data[0], cmd->data[1]);
-}
-
-static void msr_smp_rdmsr(void *cmd_block)
-{
- struct msr_command *cmd = (struct msr_command *)cmd_block;
-
- cmd->err = rdmsr_eio(cmd->reg, &cmd->data[0], &cmd->data[1]);
-}
-
-static inline int do_wrmsr(int cpu, u32 reg, u32 eax, u32 edx)
-{
- struct msr_command cmd;
- int ret;
-
- preempt_disable();
- if (cpu == smp_processor_id()) {
- ret = wrmsr_eio(reg, eax, edx);
- } else {
- cmd.reg = reg;
- cmd.data[0] = eax;
- cmd.data[1] = edx;
-
- smp_call_function_single(cpu, msr_smp_wrmsr, &cmd, 1, 1);
- ret = cmd.err;
- }
- preempt_enable();
- return ret;
-}
-
-static inline int do_rdmsr(int cpu, u32 reg, u32 * eax, u32 * edx)
-{
- struct msr_command cmd;
- int ret;
-
- preempt_disable();
- if (cpu == smp_processor_id()) {
- ret = rdmsr_eio(reg, eax, edx);
- } else {
- cmd.reg = reg;
-
- smp_call_function_single(cpu, msr_smp_rdmsr, &cmd, 1, 1);
-
- *eax = cmd.data[0];
- *edx = cmd.data[1];
-
- ret = cmd.err;
- }
- preempt_enable();
- return ret;
-}
-
-#else /* ! CONFIG_SMP */
-
-static inline int do_wrmsr(int cpu, u32 reg, u32 eax, u32 edx)
-{
- return wrmsr_eio(reg, eax, edx);
-}
-
-static inline int do_rdmsr(int cpu, u32 reg, u32 *eax, u32 *edx)
-{
- return rdmsr_eio(reg, eax, edx);
-}
-
-#endif /* ! CONFIG_SMP */
-
static loff_t msr_seek(struct file *file, loff_t offset, int orig)
{
loff_t ret = -EINVAL;
@@ -174,9 +76,9 @@ static ssize_t msr_read(struct file *file, char __user * buf,
return -EINVAL; /* Invalid chunk size */
for (; count; count -= 8) {
- err = do_rdmsr(cpu, reg, &data[0], &data[1]);
+ err = rdmsr_safe_on_cpu(cpu, reg, &data[0], &data[1]);
if (err)
- return err;
+ return -EIO;
if (copy_to_user(tmp, &data, 8))
return -EFAULT;
tmp += 2;
@@ -200,9 +102,9 @@ static ssize_t msr_write(struct file *file, const char
__user *buf,
for (; count; count -= 8) {
if (copy_from_user(&data, tmp, 8))
return -EFAULT;
- err = do_wrmsr(cpu, reg, data[0], data[1]);
+ err = wrmsr_safe_on_cpu(cpu, reg, data[0], data[1]);
if (err)
- return err;
+ return -EIO;
tmp += 2;
}
-
To unsubscribe from this list: send the line "unsubscribe git-commits-head" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
