/*
* POWER Data Stream Control Register (DSCR) SPR test
*
* This test modifies the DSCR value through both the SPR number
* based mtspr instruction and then makes sure that the same is
* reflected through mfspr instruction using either of the SPR
* numbers.
*
* When using the privilege state SPR, the instructions such as
* mfspr or mtspr are priviledged and the kernel emulates them
* for us. Instructions using problem state SPR can be exuecuted
* directly without any emulation if the HW supports them. Else
* they also get emulated by the kernel.
*
* Copyright 2013, Anton Blanchard, IBM Corporation.
* Copyright 2015, Anshuman Khandual, IBM Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*/
#include "dscr.h"
static int check_dscr(char *str)
{
unsigned long cur_dscr, cur_dscr_usr;
cur_dscr = get_dscr();
cur_dscr_usr = get_dscr_usr();
if (cur_dscr != cur_dscr_usr) {
printf("%s set, kernel get %lx != user get %lx\n",
str, cur_dscr, cur_dscr_usr);
return 1;
}
return 0;
}
int dscr_user(void)
{
int i;
check_dscr("");
for (i = 0; i < COUNT; i++) {
set_dscr(i);
if (check_dscr("kernel"))
return 1;
}
for (i = 0; i < COUNT; i++) {
set_dscr_usr(i);
if (check_dscr("user"))
return 1;
}
return 0;
}
int main(int argc, char *argv[])
{
return test_harness(dscr_user, "dscr_user_test");
}
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rtlwifi: rtl8192ce: Fix loading of incorrect firmware
In commit cf4747d7535a ("rtlwifi: Fix regression caused by commit
d86e64768859, an error in the edit results in the wrong firmware
being loaded for some models of the RTL8188/8192CE. In this condition,
the connection suffered from high ping latency, slow transfer rates,
and required higher signal strengths to work at all
See https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=853073,
https://bugzilla.opensuse.org/show_bug.cgi?id=1017471, and
https://github.com/lwfinger/rtlwifi_new/issues/203 for descriptions
of the problems. This patch fixes all of those problems.
Fixes: cf4747d7535a ("rtlwifi: Fix regression caused by commit d86e64768859")
Signed-off-by: Jurij Smakov <jurij@wooyd.org>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Stable <stable@vger.kernel.org> # 4.9+
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>