kgdb: trivial sparse fixes in kgdb test-suite

Shadowed variable and integer as NULL pointer fixes:
drivers/misc/kgdbts.c:877:6: warning: symbol 'sys_open_test' shadows an earlier one
drivers/misc/kgdbts.c:537:27: originally declared here
drivers/misc/kgdbts.c:378:22: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:386:22: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:468:30: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:472:15: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:502:30: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:506:30: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:509:30: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:523:20: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:527:20: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:530:15: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:541:21: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:545:21: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:548:15: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:559:30: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:563:15: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:573:16: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:574:19: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:578:15: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:588:16: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:589:19: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:593:15: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:602:16: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:604:15: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:925:3: warning: Using plain integer as NULL pointer
drivers/misc/kgdbts.c:938:3: warning: Using plain integer as NULL pointer

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>

diff --git a/drivers/misc/kgdbts.c b/drivers/misc/kgdbts.c
index 30a1af8..879fcbd 100644 (file)
--- a/drivers/misc/kgdbts.c
+++ b/drivers/misc/kgdbts.c
@@ -375,7 +375,7 @@ static void emul_sstep_get(char *arg)
                break;
        case 1:
                /* set breakpoint */
-               break_helper("Z0", 0, sstep_addr);
+               break_helper("Z0", NULL, sstep_addr);
                break;
        case 2:
                /* Continue */
@@ -383,7 +383,7 @@ static void emul_sstep_get(char *arg)
                break;
        case 3:
                /* Clear breakpoint */
-               break_helper("z0", 0, sstep_addr);
+               break_helper("z0", NULL, sstep_addr);
                break;
        default:
                eprintk("kgdbts: ERROR failed sstep get emulation\n");
@@ -465,11 +465,11 @@ static struct test_struct sw_breakpoint_test[] = {
        { "?", "S0*" }, /* Clear break points */
        { "kgdbts_break_test", "OK", sw_break, }, /* set sw breakpoint */
        { "c", "T0*", }, /* Continue */
-       { "g", "kgdbts_break_test", 0, check_and_rewind_pc },
+       { "g", "kgdbts_break_test", NULL, check_and_rewind_pc },
        { "write", "OK", write_regs },
        { "kgdbts_break_test", "OK", sw_rem_break }, /*remove breakpoint */
        { "D", "OK" }, /* Detach */
-       { "D", "OK", 0,  got_break }, /* If the test worked we made it here */
+       { "D", "OK", NULL,  got_break }, /* On success we made it here */
        { "", "" },
 };
 
@@ -499,14 +499,14 @@ static struct test_struct singlestep_break_test[] = {
        { "?", "S0*" }, /* Clear break points */
        { "kgdbts_break_test", "OK", sw_break, }, /* set sw breakpoint */
        { "c", "T0*", }, /* Continue */
-       { "g", "kgdbts_break_test", 0, check_and_rewind_pc },
+       { "g", "kgdbts_break_test", NULL, check_and_rewind_pc },
        { "write", "OK", write_regs }, /* Write registers */
        { "kgdbts_break_test", "OK", sw_rem_break }, /*remove breakpoint */
        { "s", "T0*", emul_sstep_get, emul_sstep_put }, /* Single step */
-       { "g", "kgdbts_break_test", 0, check_single_step },
+       { "g", "kgdbts_break_test", NULL, check_single_step },
        { "kgdbts_break_test", "OK", sw_break, }, /* set sw breakpoint */
        { "c", "T0*", }, /* Continue */
-       { "g", "kgdbts_break_test", 0, check_and_rewind_pc },
+       { "g", "kgdbts_break_test", NULL, check_and_rewind_pc },
        { "write", "OK", write_regs }, /* Write registers */
        { "D", "OK" }, /* Remove all breakpoints and continues */
        { "", "" },
@@ -520,14 +520,14 @@ static struct test_struct do_fork_test[] = {
        { "?", "S0*" }, /* Clear break points */
        { "do_fork", "OK", sw_break, }, /* set sw breakpoint */
        { "c", "T0*", }, /* Continue */
-       { "g", "do_fork", 0, check_and_rewind_pc }, /* check location */
+       { "g", "do_fork", NULL, check_and_rewind_pc }, /* check location */
        { "write", "OK", write_regs }, /* Write registers */
        { "do_fork", "OK", sw_rem_break }, /*remove breakpoint */
        { "s", "T0*", emul_sstep_get, emul_sstep_put }, /* Single step */
-       { "g", "do_fork", 0, check_single_step },
+       { "g", "do_fork", NULL, check_single_step },
        { "do_fork", "OK", sw_break, }, /* set sw breakpoint */
        { "7", "T0*", skip_back_repeat_test }, /* Loop based on repeat_test */
-       { "D", "OK", 0, final_ack_set }, /* detach and unregister I/O */
+       { "D", "OK", NULL, final_ack_set }, /* detach and unregister I/O */
        { "", "" },
 };
 
@@ -538,14 +538,14 @@ static struct test_struct sys_open_test[] = {
        { "?", "S0*" }, /* Clear break points */
        { "sys_open", "OK", sw_break, }, /* set sw breakpoint */
        { "c", "T0*", }, /* Continue */
-       { "g", "sys_open", 0, check_and_rewind_pc }, /* check location */
+       { "g", "sys_open", NULL, check_and_rewind_pc }, /* check location */
        { "write", "OK", write_regs }, /* Write registers */
        { "sys_open", "OK", sw_rem_break }, /*remove breakpoint */
        { "s", "T0*", emul_sstep_get, emul_sstep_put }, /* Single step */
-       { "g", "sys_open", 0, check_single_step },
+       { "g", "sys_open", NULL, check_single_step },
        { "sys_open", "OK", sw_break, }, /* set sw breakpoint */
        { "7", "T0*", skip_back_repeat_test }, /* Loop based on repeat_test */
-       { "D", "OK", 0, final_ack_set }, /* detach and unregister I/O */
+       { "D", "OK", NULL, final_ack_set }, /* detach and unregister I/O */
        { "", "" },
 };
 
@@ -556,11 +556,11 @@ static struct test_struct hw_breakpoint_test[] = {
        { "?", "S0*" }, /* Clear break points */
        { "kgdbts_break_test", "OK", hw_break, }, /* set hw breakpoint */
        { "c", "T0*", }, /* Continue */
-       { "g", "kgdbts_break_test", 0, check_and_rewind_pc },
+       { "g", "kgdbts_break_test", NULL, check_and_rewind_pc },
        { "write", "OK", write_regs },
        { "kgdbts_break_test", "OK", hw_rem_break }, /*remove breakpoint */
        { "D", "OK" }, /* Detach */
-       { "D", "OK", 0,  got_break }, /* If the test worked we made it here */
+       { "D", "OK", NULL,  got_break }, /* On success we made it here */
        { "", "" },
 };
 
@@ -570,12 +570,12 @@ static struct test_struct hw_breakpoint_test[] = {
 static struct test_struct hw_write_break_test[] = {
        { "?", "S0*" }, /* Clear break points */
        { "hw_break_val", "OK", hw_write_break, }, /* set hw breakpoint */
-       { "c", "T0*", 0, got_break }, /* Continue */
-       { "g", "silent", 0, check_and_rewind_pc },
+       { "c", "T0*", NULL, got_break }, /* Continue */
+       { "g", "silent", NULL, check_and_rewind_pc },
        { "write", "OK", write_regs },
        { "hw_break_val", "OK", hw_rem_write_break }, /*remove breakpoint */
        { "D", "OK" }, /* Detach */
-       { "D", "OK", 0,  got_break }, /* If the test worked we made it here */
+       { "D", "OK", NULL,  got_break }, /* On success we made it here */
        { "", "" },
 };
 
@@ -585,12 +585,12 @@ static struct test_struct hw_write_break_test[] = {
 static struct test_struct hw_access_break_test[] = {
        { "?", "S0*" }, /* Clear break points */
        { "hw_break_val", "OK", hw_access_break, }, /* set hw breakpoint */
-       { "c", "T0*", 0, got_break }, /* Continue */
-       { "g", "silent", 0, check_and_rewind_pc },
+       { "c", "T0*", NULL, got_break }, /* Continue */
+       { "g", "silent", NULL, check_and_rewind_pc },
        { "write", "OK", write_regs },
        { "hw_break_val", "OK", hw_rem_access_break }, /*remove breakpoint */
        { "D", "OK" }, /* Detach */
-       { "D", "OK", 0,  got_break }, /* If the test worked we made it here */
+       { "D", "OK", NULL,  got_break }, /* On success we made it here */
        { "", "" },
 };
 
@@ -599,9 +599,9 @@ static struct test_struct hw_access_break_test[] = {
  */
 static struct test_struct nmi_sleep_test[] = {
        { "?", "S0*" }, /* Clear break points */
-       { "c", "T0*", 0, got_break }, /* Continue */
+       { "c", "T0*", NULL, got_break }, /* Continue */
        { "D", "OK" }, /* Detach */
-       { "D", "OK", 0,  got_break }, /* If the test worked we made it here */
+       { "D", "OK", NULL,  got_break }, /* On success we made it here */
        { "", "" },
 };
 
@@ -874,15 +874,15 @@ static void kgdbts_run_tests(void)
 {
        char *ptr;
        int fork_test = 0;
-       int sys_open_test = 0;
+       int do_sys_open_test = 0;
        int nmi_sleep = 0;
 
        ptr = strstr(config, "F");
        if (ptr)
-               fork_test = simple_strtol(ptr+1, NULL, 10);
+               fork_test = simple_strtol(ptr + 1, NULL, 10);
        ptr = strstr(config, "S");
        if (ptr)
-               sys_open_test = simple_strtol(ptr+1, NULL, 10);
+               do_sys_open_test = simple_strtol(ptr + 1, NULL, 10);
        ptr = strstr(config, "N");
        if (ptr)
                nmi_sleep = simple_strtol(ptr+1, NULL, 10);
@@ -922,7 +922,7 @@ static void kgdbts_run_tests(void)
                repeat_test = fork_test;
                printk(KERN_INFO "kgdbts:RUN do_fork for %i breakpoints\n",
                        repeat_test);
-               kthread_run(kgdbts_unreg_thread, 0, "kgdbts_unreg");
+               kthread_run(kgdbts_unreg_thread, NULL, "kgdbts_unreg");
                run_do_fork_test();
                return;
        }
@@ -931,11 +931,11 @@ static void kgdbts_run_tests(void)
         * executed because a kernel thread will be spawned at the very
         * end to unregister the debug hooks.
         */
-       if (sys_open_test) {
-               repeat_test = sys_open_test;
+       if (do_sys_open_test) {
+               repeat_test = do_sys_open_test;
                printk(KERN_INFO "kgdbts:RUN sys_open for %i breakpoints\n",
                        repeat_test);
-               kthread_run(kgdbts_unreg_thread, 0, "kgdbts_unreg");
+               kthread_run(kgdbts_unreg_thread, NULL, "kgdbts_unreg");
                run_sys_open_test();
                return;
        }