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emul: spi: bmi160: Add a check for a missing rx buffer

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If a read is requested without a read buffer, the emulator currently
crashes. Fix this by adding a check.

Fixes: #29703
Fixes: #29702
Fixes: #29017
Fixes: #29016

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2020-11-04 11:41:55 -07:00 committed by Maureen Helm
parent 4c15611f42
commit 129cfec28a
1 changed files with 4 additions and 0 deletions
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4
subsys/emul/emul_bmi160.c
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@ -197,6 +197,10 @@ static int bmi160_emul_io_spi(struct spi_emul *emul,
switch (tx->len) {
case 1:
regn = *(uint8_t *)tx->buf;
if ((regn & BMI160_REG_READ) && rxd == NULL) {
LOG_ERR("Cannot read without rxd");
return -EPERM;
}
switch (txd->len) {
case 1:
if (regn & BMI160_REG_READ) {