Commit fcfeef6c authored by Lidza Louina's avatar Lidza Louina Committed by Greg Kroah-Hartman

staging: dgap: tty.c: removes smatch warnings "redundant null check"

This patch removes these smatch warnings:
redundant null check on dgap_TmpWriteBuf calling kfree()
redundant null check on brd->SerialDriver->ttys calling kfree()
redundant null check on brd->PrintDriver->ttys calling kfree()

The code checked to see if these variables are null
before freeing. This check isn't needed.
Signed-off-by: default avatarLidza Louina <lidza.louina@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 913b6f8e
......@@ -497,10 +497,8 @@ int dgap_tty_init(struct board_t *brd)
*/
void dgap_tty_post_uninit(void)
{
if (dgap_TmpWriteBuf) {
kfree(dgap_TmpWriteBuf);
dgap_TmpWriteBuf = NULL;
}
kfree(dgap_TmpWriteBuf);
dgap_TmpWriteBuf = NULL;
}
......@@ -522,10 +520,8 @@ void dgap_tty_uninit(struct board_t *brd)
tty_unregister_device(brd->SerialDriver, i);
}
tty_unregister_driver(brd->SerialDriver);
if (brd->SerialDriver->ttys) {
kfree(brd->SerialDriver->ttys);
brd->SerialDriver->ttys = NULL;
}
kfree(brd->SerialDriver->ttys);
brd->SerialDriver->ttys = NULL;
put_tty_driver(brd->SerialDriver);
brd->dgap_Major_Serial_Registered = FALSE;
}
......@@ -538,10 +534,8 @@ void dgap_tty_uninit(struct board_t *brd)
tty_unregister_device(brd->PrintDriver, i);
}
tty_unregister_driver(brd->PrintDriver);
if (brd->PrintDriver->ttys) {
kfree(brd->PrintDriver->ttys);
brd->PrintDriver->ttys = NULL;
}
kfree(brd->PrintDriver->ttys);
brd->PrintDriver->ttys = NULL;
put_tty_driver(brd->PrintDriver);
brd->dgap_Major_TransparentPrint_Registered = FALSE;
}
......
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