github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-24 15:12:13 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

net: nb8800: avoid uninitialized variable warning

Browse Source 
The nb8800_poll() function initializes the 'next' variable in the
loop looking for new input data. We know this will be called at
least once because 'budget' is a guaranteed to be a positive number
when we enter the function, but the compiler doesn't know that
and warns when the variable is used later:

drivers/net/ethernet/aurora/nb8800.c: In function 'nb8800_poll':
drivers/net/ethernet/aurora/nb8800.c:350:21: warning: 'next' may be used uninitialized in this function [-Wmaybe-uninitialized]

Changing the 'while() {}' loop to 'do {} while()' makes it obvious
to the compiler what is going on so it no longer warns.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arnd Bergmann 2016-01-29 12:39:14 +01:00 committed by David S. Miller
parent 57e7c8cef2
commit 8bdb290896
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/net/ethernet/aurora/nb8800.c
View File

@ -302,7 +302,7 @@ static int nb8800_poll(struct napi_struct *napi, int budget)
nb8800_tx_done(dev);
again:
while (work < budget) {
do {
struct nb8800_rx_buf *rxb;
unsigned int len;
@ -330,7 +330,7 @@ static int nb8800_poll(struct napi_struct *napi, int budget)
rxd->report = 0;
last = next;
work++;
}
} while (work < budget);
if (work) {
priv->rx_descs[last].desc.config |= DESC_EOC;