[PATCH v1 2/7] net: ipa: endpoint: Don't read unexistant register on IPAv3.1
From: AngeloGioacchino Del Regno <hidden>
Date: 2021-02-11 18:29:41
Also in:
linux-arm-msm, linux-devicetree, lkml, phone-devel
Subsystem:
networking drivers, qcom ipa driver, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Alex Elder, Linus Torvalds
On IPAv3.1 there is no such FLAVOR_0 register so it is impossible to read tx/rx channel masks and we have to rely on the correctness on the provided configuration. Signed-off-by: AngeloGioacchino Del Regno <redacted> --- drivers/net/ipa/ipa_endpoint.c | 9 +++++++++ 1 file changed, 9 insertions(+)
diff --git a/drivers/net/ipa/ipa_endpoint.c b/drivers/net/ipa/ipa_endpoint.c
index 06d8aa34276e..10c477e1bb90 100644
--- a/drivers/net/ipa/ipa_endpoint.c
+++ b/drivers/net/ipa/ipa_endpoint.c@@ -1659,6 +1659,15 @@ int ipa_endpoint_config(struct ipa *ipa) u32 max; u32 val; + /* Some IPA versions don't provide a FLAVOR register and we cannot + * check the rx/tx masks hence we have to rely on the correctness + * of the provided configuration. + */ + if (ipa->version == IPA_VERSION_3_1) { + ipa->available = U32_MAX; + return 0; + } + /* Find out about the endpoints supplied by the hardware, and ensure * the highest one doesn't exceed the number we support. */
--
2.30.0