xiaomi-sm8450/android_kernel_xiaomi_sm8450
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usb: get rid of pointless access_ok() calls

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in all affected cases addresses are passed only to
copy_from()_user or copy_to_user().

Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2020-04-23 10:27:20 -04:00
parent e6c0433e27
commit fe6bb59f4d
3 changed files with 0 additions and 17 deletions
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6
drivers/usb/gadget/function/f_hid.c
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@@ -252,9 +252,6 @@ static ssize_t f_hidg_read(struct file *file, char __user *buffer,
if (!count)
return 0;
if (!access_ok(buffer, count))
return -EFAULT;
spin_lock_irqsave(&hidg->read_spinlock, flags);
#define READ_COND (!list_empty(&hidg->completed_out_req))
@@ -339,9 +336,6 @@ static ssize_t f_hidg_write(struct file *file, const char __user *buffer,
unsigned long flags;
ssize_t status = -ENOMEM;
if (!access_ok(buffer, count))
return -EFAULT;
spin_lock_irqsave(&hidg->write_spinlock, flags);
#define WRITE_COND (!hidg->write_pending)