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| author | Jacob Garber <jgarber1@ualberta.ca> | 2019-04-30 17:27:40 -0600 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2019-05-06 10:29:28 +0000 |
| commit | fb0fa7643eab9d81626c375a1b3b8d11138dd979 (patch) | |
| tree | 7fc47260af7f7dddef2cb3c12f1e7a9e1770e1a0 | |
| parent | 5471be69b9168d3dbceac064522522a97ed1a0db (diff) | |
| download | coreboot-fb0fa7643eab9d81626c375a1b3b8d11138dd979.tar.xz | |
sb/amd/rs780: Use 32 bit variable to avoid truncation
The {read,write}_index functions expect a 32 bit value, as
do the bitwise operations.
Found-by: Coverity Scan #1229584
Signed-off-by: Jacob Garber <jgarber1@ualberta.ca>
Change-Id: Idc2bc46c899d5a4e8b089644dca076a88d97dd7c
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32528
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
| -rw-r--r-- | src/southbridge/amd/rs780/ht.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/src/southbridge/amd/rs780/ht.c b/src/southbridge/amd/rs780/ht.c index 94df2337c1..8943fc1300 100644 --- a/src/southbridge/amd/rs780/ht.c +++ b/src/southbridge/amd/rs780/ht.c @@ -24,24 +24,24 @@ void avoid_lpc_dma_deadlock(struct device *nb_dev, struct device *sb_dev) { struct device *cpu_f0; - u8 reg; + u32 reg32; cpu_f0 = pcidev_on_root(0x18, 0); set_nbcfg_enable_bits(cpu_f0, 0x68, 3 << 21, 1 << 21); - reg = nbpcie_p_read_index(sb_dev, 0x10); - reg |= 0x100; /* bit9=1 */ - nbpcie_p_write_index(sb_dev, 0x10, reg); + reg32 = nbpcie_p_read_index(sb_dev, 0x10); + reg32 |= 0x100; /* bit9=1 */ + nbpcie_p_write_index(sb_dev, 0x10, reg32); - reg = nbpcie_p_read_index(nb_dev, 0x10); - reg |= 0x100; /* bit9=1 */ - nbpcie_p_write_index(nb_dev, 0x10, reg); + reg32 = nbpcie_p_read_index(nb_dev, 0x10); + reg32 |= 0x100; /* bit9=1 */ + nbpcie_p_write_index(nb_dev, 0x10, reg32); /* Enable NP protocol over PCIE for memory-mapped writes targeting LPC * Set this bit to avoid a deadlock condition. */ - reg = htiu_read_index(nb_dev, 0x6); - reg |= 0x1000000; /* bit26 */ - htiu_write_index(nb_dev, 0x6, reg); + reg32 = htiu_read_index(nb_dev, 0x6); + reg32 |= 0x1000000; /* bit26 */ + htiu_write_index(nb_dev, 0x6, reg32); } static void pcie_init(struct device *dev) |