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drm/amd/display: fix static analysis warnings

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[Why & How]
Fix static analysis warnings in SPL library

Reviewed-by: Alvin Lee <alvin.lee2@amd.com>
Signed-off-by: Samson Tam <Samson.Tam@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Samson Tam
2024-09-10 01:02:16 -04:00
committed by Alex Deucher
parent a6f59c0445
commit 83e0a4a946
5 changed files with 45 additions and 44 deletions
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4
drivers/gpu/drm/amd/display/dc/spl/dc_spl_types.h
View File

@@ -5,10 +5,8 @@
#ifndef __DC_SPL_TYPES_H__
#define __DC_SPL_TYPES_H__
#include "spl_debug.h"
#include "spl_os_types.h" // swap
#ifndef SPL_ASSERT
#define SPL_ASSERT(_bool) ((void *)0)
#endif
#include "spl_fixpt31_32.h" // fixed31_32 and related functions
#include "spl_custom_float.h" // custom float and related functions

33
drivers/gpu/drm/amd/display/dc/spl/spl_debug.h
View File

@@ -5,21 +5,26 @@
#ifndef SPL_DEBUG_H
#define SPL_DEBUG_H
#ifdef SPL_ASSERT
#undef SPL_ASSERT
#endif
#define SPL_ASSERT(b)
#if defined(CONFIG_HAVE_KGDB) || defined(CONFIG_KGDB)
#define SPL_ASSERT_CRITICAL(expr) do { \
if (WARN_ON(!(expr))) { \
kgdb_breakpoint(); \
} \
} while (0)
#else
#define SPL_ASSERT_CRITICAL(expr) do { \
if (WARN_ON(!(expr))) { \
; \
} \
} while (0)
#endif /* CONFIG_HAVE_KGDB || CONFIG_KGDB */
#define SPL_ASSERT_CRITICAL(expr) do {if (expr)/* Do nothing */; } while (0)
#if defined(CONFIG_DEBUG_KERNEL_DC)
#define SPL_ASSERT(expr) SPL_ASSERT_CRITICAL(expr)
#else
#define SPL_ASSERT(expr) WARN_ON(!(expr))
#endif /* CONFIG_DEBUG_KERNEL_DC */
#ifdef SPL_DALMSG
#undef SPL_DALMSG
#endif
#define SPL_DALMSG(b)
#ifdef SPL_DAL_ASSERT_MSG
#undef SPL_DAL_ASSERT_MSG
#endif
#define SPL_DAL_ASSERT_MSG(b, m)
#define SPL_BREAK_TO_DEBUGGER() SPL_ASSERT(0)
#endif // SPL_DEBUG_H

32
drivers/gpu/drm/amd/display/dc/spl/spl_fixpt31_32.c
View File

@@ -29,7 +29,7 @@ static inline unsigned long long complete_integer_division_u64(
{
unsigned long long result;
ASSERT(divisor);
SPL_ASSERT(divisor);
result = spl_div64_u64_rem(dividend, divisor, remainder);
@@ -63,7 +63,7 @@ struct spl_fixed31_32 spl_fixpt_from_fraction(long long numerator, long long den
unsigned long long res_value = complete_integer_division_u64(
arg1_value, arg2_value, &remainder);
ASSERT(res_value <= LONG_MAX);
SPL_ASSERT(res_value <= (unsigned long long)LONG_MAX);
/* determine fractional part */
{
@@ -85,7 +85,7 @@ struct spl_fixed31_32 spl_fixpt_from_fraction(long long numerator, long long den
{
unsigned long long summand = (remainder << 1) >= arg2_value;
ASSERT(res_value <= LLONG_MAX - summand);
SPL_ASSERT(res_value <= (unsigned long long)LLONG_MAX - summand);
res_value += summand;
}
@@ -118,19 +118,19 @@ struct spl_fixed31_32 spl_fixpt_mul(struct spl_fixed31_32 arg1, struct spl_fixed
res.value = arg1_int * arg2_int;
ASSERT(res.value <= (long long)LONG_MAX);
SPL_ASSERT(res.value <= (long long)LONG_MAX);
res.value <<= FIXED31_32_BITS_PER_FRACTIONAL_PART;
tmp = arg1_int * arg2_fra;
ASSERT(tmp <= (unsigned long long)(LLONG_MAX - res.value));
SPL_ASSERT(tmp <= (unsigned long long)(LLONG_MAX - res.value));
res.value += tmp;
tmp = arg2_int * arg1_fra;
ASSERT(tmp <= (unsigned long long)(LLONG_MAX - res.value));
SPL_ASSERT(tmp <= (unsigned long long)(LLONG_MAX - res.value));
res.value += tmp;
@@ -139,7 +139,7 @@ struct spl_fixed31_32 spl_fixpt_mul(struct spl_fixed31_32 arg1, struct spl_fixed
tmp = (tmp >> FIXED31_32_BITS_PER_FRACTIONAL_PART) +
(tmp >= (unsigned long long)spl_fixpt_half.value);
ASSERT(tmp <= (unsigned long long)(LLONG_MAX - res.value));
SPL_ASSERT(tmp <= (unsigned long long)(LLONG_MAX - res.value));
res.value += tmp;
@@ -163,17 +163,17 @@ struct spl_fixed31_32 spl_fixpt_sqr(struct spl_fixed31_32 arg)
res.value = arg_int * arg_int;
ASSERT(res.value <= (long long)LONG_MAX);
SPL_ASSERT(res.value <= (long long)LONG_MAX);
res.value <<= FIXED31_32_BITS_PER_FRACTIONAL_PART;
tmp = arg_int * arg_fra;
ASSERT(tmp <= (unsigned long long)(LLONG_MAX - res.value));
SPL_ASSERT(tmp <= (unsigned long long)(LLONG_MAX - res.value));
res.value += tmp;
ASSERT(tmp <= (unsigned long long)(LLONG_MAX - res.value));
SPL_ASSERT(tmp <= (unsigned long long)(LLONG_MAX - res.value));
res.value += tmp;
@@ -182,7 +182,7 @@ struct spl_fixed31_32 spl_fixpt_sqr(struct spl_fixed31_32 arg)
tmp = (tmp >> FIXED31_32_BITS_PER_FRACTIONAL_PART) +
(tmp >= (unsigned long long)spl_fixpt_half.value);
ASSERT(tmp <= (unsigned long long)(LLONG_MAX - res.value));
SPL_ASSERT(tmp <= (unsigned long long)(LLONG_MAX - res.value));
res.value += tmp;
@@ -196,7 +196,7 @@ struct spl_fixed31_32 spl_fixpt_recip(struct spl_fixed31_32 arg)
* Good idea to use Newton's method
*/
ASSERT(arg.value);
SPL_ASSERT(arg.value);
return spl_fixpt_from_fraction(
spl_fixpt_one.value,
@@ -295,7 +295,7 @@ static struct spl_fixed31_32 fixed31_32_exp_from_taylor_series(struct spl_fixed3
n + 1);
/* TODO find correct res */
ASSERT(spl_fixpt_lt(arg, spl_fixpt_one));
SPL_ASSERT(spl_fixpt_lt(arg, spl_fixpt_one));
do
res = spl_fixpt_add(
@@ -337,9 +337,9 @@ struct spl_fixed31_32 spl_fixpt_exp(struct spl_fixed31_32 arg)
spl_fixpt_ln2,
m));
ASSERT(m != 0);
SPL_ASSERT(m != 0);
ASSERT(spl_fixpt_lt(
SPL_ASSERT(spl_fixpt_lt(
spl_fixpt_abs(r),
spl_fixpt_one));
@@ -364,7 +364,7 @@ struct spl_fixed31_32 spl_fixpt_log(struct spl_fixed31_32 arg)
struct spl_fixed31_32 error;
ASSERT(arg.value > 0);
SPL_ASSERT(arg.value > 0);
/* TODO if arg is negative, return NaN */
/* TODO if arg is zero, return -INF */

17
drivers/gpu/drm/amd/display/dc/spl/spl_fixpt31_32.h
View File

@@ -5,11 +5,8 @@
#ifndef __SPL_FIXED31_32_H__
#define __SPL_FIXED31_32_H__
#include "os_types.h"
#include "spl_debug.h"
#include "spl_os_types.h" // swap
#ifndef ASSERT
#define ASSERT(_bool) ((void *)0)
#endif
#ifndef LLONG_MAX
#define LLONG_MAX 9223372036854775807ll
@@ -194,7 +191,7 @@ static inline struct spl_fixed31_32 spl_fixpt_clamp(
*/
static inline struct spl_fixed31_32 spl_fixpt_shl(struct spl_fixed31_32 arg, unsigned char shift)
{
ASSERT(((arg.value >= 0) && (arg.value <= LLONG_MAX >> shift)) ||
SPL_ASSERT(((arg.value >= 0) && (arg.value <= LLONG_MAX >> shift)) ||
((arg.value < 0) && (arg.value >= ~(LLONG_MAX >> shift))));
arg.value = arg.value << shift;
@@ -231,7 +228,7 @@ static inline struct spl_fixed31_32 spl_fixpt_add(struct spl_fixed31_32 arg1, st
{
struct spl_fixed31_32 res;
ASSERT(((arg1.value >= 0) && (LLONG_MAX - arg1.value >= arg2.value)) ||
SPL_ASSERT(((arg1.value >= 0) && (LLONG_MAX - arg1.value >= arg2.value)) ||
((arg1.value < 0) && (LLONG_MIN - arg1.value <= arg2.value)));
res.value = arg1.value + arg2.value;
@@ -256,7 +253,7 @@ static inline struct spl_fixed31_32 spl_fixpt_sub(struct spl_fixed31_32 arg1, st
{
struct spl_fixed31_32 res;
ASSERT(((arg2.value >= 0) && (LLONG_MIN + arg2.value <= arg1.value)) ||
SPL_ASSERT(((arg2.value >= 0) && (LLONG_MIN + arg2.value <= arg1.value)) ||
((arg2.value < 0) && (LLONG_MAX + arg2.value >= arg1.value)));
res.value = arg1.value - arg2.value;
@@ -448,7 +445,7 @@ static inline int spl_fixpt_round(struct spl_fixed31_32 arg)
const long long summand = spl_fixpt_half.value;
ASSERT(LLONG_MAX - (long long)arg_value >= summand);
SPL_ASSERT(LLONG_MAX - (long long)arg_value >= summand);
arg_value += summand;
@@ -469,7 +466,7 @@ static inline int spl_fixpt_ceil(struct spl_fixed31_32 arg)
const long long summand = spl_fixpt_one.value -
spl_fixpt_epsilon.value;
ASSERT(LLONG_MAX - (long long)arg_value >= summand);
SPL_ASSERT(LLONG_MAX - (long long)arg_value >= summand);
arg_value += summand;
@@ -504,7 +501,7 @@ static inline struct spl_fixed31_32 spl_fixpt_truncate(struct spl_fixed31_32 arg
bool negative = arg.value < 0;
if (frac_bits >= FIXED31_32_BITS_PER_FRACTIONAL_PART) {
ASSERT(frac_bits == FIXED31_32_BITS_PER_FRACTIONAL_PART);
SPL_ASSERT(frac_bits == FIXED31_32_BITS_PER_FRACTIONAL_PART);
return arg;
}

3
drivers/gpu/drm/amd/display/dc/spl/spl_os_types.h
View File

@@ -6,6 +6,8 @@
#ifndef _SPL_OS_TYPES_H_
#define _SPL_OS_TYPES_H_
#include "spl_debug.h"
#include <linux/slab.h>
#include <linux/kgdb.h>
#include <linux/kref.h>
@@ -18,7 +20,6 @@
* general debug capabilities
*
*/
#define SPL_BREAK_TO_DEBUGGER() ASSERT(0)
static inline uint64_t spl_div_u64_rem(uint64_t dividend, uint32_t divisor, uint32_t *remainder)
{