Re: [PATCH] staging: r8188eu: Fix while-loop that iterates only once
From: Colin Ian King <hidden>
Date: 2021-06-30 06:44:52
Also in:
kernel-janitors, lkml
From: Colin Ian King <hidden>
Date: 2021-06-30 06:44:52
Also in:
kernel-janitors, lkml
On 29/06/2021 22:53, David Laight wrote:
From: Colin Kingquoted
Sent: 29 June 2021 17:36 The while-loop only iterates once becase the post increment test of count being non-zero is false on the first iteration because count is zero. Fix this by incrementing count using pre-increment. Static analysis found the issue on the count > POLLING_LLT_THRESHOLD check always being false since the loop currently just iterates once.But that is a very strange 'loop bottom'. ...quoted
diff --git a/drivers/staging/rtl8188eu/hal/rtl8188e_hal_init.cb/drivers/staging/rtl8188eu/hal/rtl8188e_hal_init.c index d1086699f952..db57f04e7e56 100644--- a/drivers/staging/rtl8188eu/hal/rtl8188e_hal_init.c +++ b/drivers/staging/rtl8188eu/hal/rtl8188e_hal_init.c@@ -185,7 +185,7 @@ static s32 _LLTWrite(struct adapter *padapter, u32 address, u32 data) break; } udelay(5); - } while (count++); + } while (++count);Unless 'count' is negative that might as well be 'while (1)' with count incremented elsewhere. Perhaps the loop top should be: for (count = 0;; count++) {
I'll rework it, thanks for the input.
David - Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK Registration No: 1397386 (Wales)