diff options
Diffstat (limited to 'drivers/staging/unisys/visorchipset/visorchipset_main.c')
| -rw-r--r-- | drivers/staging/unisys/visorchipset/visorchipset_main.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/staging/unisys/visorchipset/visorchipset_main.c b/drivers/staging/unisys/visorchipset/visorchipset_main.c index 8252ca14695d..257c6e59b460 100644 --- a/drivers/staging/unisys/visorchipset/visorchipset_main.c +++ b/drivers/staging/unisys/visorchipset/visorchipset_main.c @@ -2414,6 +2414,9 @@ proc_read_installer(struct file *file, char __user *buf, char *vbuf; loff_t pos = *offset; + if (!ControlVm_channel) + return -ENODEV; + if (pos < 0) return -EINVAL; @@ -2463,6 +2466,9 @@ proc_write_installer(struct file *file, U16 remainingSteps; U32 error, textId; + if (!ControlVm_channel) + return -ENODEV; + /* Check to make sure there is no buffer overflow */ if (count > (sizeof(buf) - 1)) return -EINVAL; @@ -2524,6 +2530,9 @@ proc_read_toolaction(struct file *file, char __user *buf, char *vbuf; loff_t pos = *offset; + if (!ControlVm_channel) + return -ENODEV; + if (pos < 0) return -EINVAL; @@ -2562,6 +2571,9 @@ proc_write_toolaction(struct file *file, char buf[3]; U8 toolAction; + if (!ControlVm_channel) + return -ENODEV; + /* Check to make sure there is no buffer overflow */ if (count > (sizeof(buf) - 1)) return -EINVAL; @@ -2601,6 +2613,9 @@ proc_read_bootToTool(struct file *file, char __user *buf, char *vbuf; loff_t pos = *offset; + if (!ControlVm_channel) + return -ENODEV; + if (pos < 0) return -EINVAL; @@ -2639,6 +2654,9 @@ proc_write_bootToTool(struct file *file, int inputVal; ULTRA_EFI_SPAR_INDICATION efiSparIndication; + if (!ControlVm_channel) + return -ENODEV; + /* Check to make sure there is no buffer overflow */ if (count > (sizeof(buf) - 1)) return -EINVAL; |