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| author | Gustavo A. R. Silva <gustavoars@kernel.org> | 2023-03-17 14:56:39 -0600 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2023-04-17 17:30:03 +0200 |
| commit | 6d6793cef6a491b8f6db5f40ef3334411293da32 (patch) | |
| tree | 3b815888911d3e5fd5691827cad99dd87ae9f9ec /drivers/net/wireless/mediatek/mt76 | |
| parent | 2631c5b6ef9d7c6707e020def6947464c8aa6f92 (diff) | |
| download | linux-stable-6d6793cef6a491b8f6db5f40ef3334411293da32.tar.gz linux-stable-6d6793cef6a491b8f6db5f40ef3334411293da32.tar.bz2 linux-stable-6d6793cef6a491b8f6db5f40ef3334411293da32.zip | |
wifi: mt76: mt7921: Replace fake flex-arrays with flexible-array members
Zero-length arrays as fake flexible arrays are deprecated and we are
moving towards adopting C99 flexible-array members instead.
Address the following warnings found with GCC-13 and
-fstrict-flex-arrays=3 enabled:
drivers/net/wireless/mediatek/mt76/mt7921/acpi_sar.c:266:25: warning: array subscript 0 is outside array bounds of ‘struct mt7921_asar_dyn_limit_v2[0]’ [-Warray-bounds=]
drivers/net/wireless/mediatek/mt76/mt7921/acpi_sar.c:263:25: warning: array subscript 0 is outside array bounds of ‘struct mt7921_asar_dyn_limit[0]’ [-Warray-bounds=]
drivers/net/wireless/mediatek/mt76/mt7921/acpi_sar.c:223:28: warning: array subscript <unknown> is outside array bounds of ‘struct mt7921_asar_geo_limit_v2[0]’ [-Warray-bounds=]
drivers/net/wireless/mediatek/mt76/mt7921/acpi_sar.c:220:28: warning: array subscript <unknown> is outside array bounds of ‘struct mt7921_asar_geo_limit[0]’ [-Warray-bounds=]
drivers/net/wireless/mediatek/mt76/mt7921/acpi_sar.c:334:37: warning: array subscript i is outside array bounds of ‘u8[0]’ {aka ‘unsigned char[]’} [-Warray-bounds=]
Notice that the DECLARE_FLEX_ARRAY() helper allows for flexible-array
members in unions.
This helps with the ongoing efforts to tighten the FORTIFY_SOURCE
routines on memcpy() and help us make progress towards globally
enabling -fstrict-flex-arrays=3 [1].
Link: https://github.com/KSPP/linux/issues/21
Link: https://github.com/KSPP/linux/issues/272
Link: https://gcc.gnu.org/pipermail/gcc-patches/2022-October/602902.html [1]
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'drivers/net/wireless/mediatek/mt76')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt7921/acpi_sar.h | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/acpi_sar.h b/drivers/net/wireless/mediatek/mt76/mt7921/acpi_sar.h index 35268b0890ad..6f2c4a572572 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7921/acpi_sar.h +++ b/drivers/net/wireless/mediatek/mt76/mt7921/acpi_sar.h @@ -24,7 +24,7 @@ struct mt7921_asar_dyn { u8 names[4]; u8 enable; u8 nr_tbl; - struct mt7921_asar_dyn_limit tbl[0]; + DECLARE_FLEX_ARRAY(struct mt7921_asar_dyn_limit, tbl); } __packed; struct mt7921_asar_dyn_limit_v2 { @@ -37,7 +37,7 @@ struct mt7921_asar_dyn_v2 { u8 enable; u8 rsvd; u8 nr_tbl; - struct mt7921_asar_dyn_limit_v2 tbl[0]; + DECLARE_FLEX_ARRAY(struct mt7921_asar_dyn_limit_v2, tbl); } __packed; struct mt7921_asar_geo_band { @@ -55,7 +55,7 @@ struct mt7921_asar_geo { u8 names[4]; u8 version; u8 nr_tbl; - struct mt7921_asar_geo_limit tbl[0]; + DECLARE_FLEX_ARRAY(struct mt7921_asar_geo_limit, tbl); } __packed; struct mt7921_asar_geo_limit_v2 { @@ -69,7 +69,7 @@ struct mt7921_asar_geo_v2 { u8 version; u8 rsvd; u8 nr_tbl; - struct mt7921_asar_geo_limit_v2 tbl[0]; + DECLARE_FLEX_ARRAY(struct mt7921_asar_geo_limit_v2, tbl); } __packed; struct mt7921_asar_cl { @@ -85,7 +85,7 @@ struct mt7921_asar_fg { u8 rsvd; u8 nr_flag; u8 rsvd1; - u8 flag[0]; + u8 flag[]; } __packed; struct mt7921_acpi_sar { |