diff options
| author | Alex Elder <elder@linaro.org> | 2021-07-27 16:19:31 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-07-28 00:06:27 +0100 |
| commit | 34c6034b476416c2551dd4648e5f94f4413ce689 (patch) | |
| tree | 95cb153c8eb10100873c22ab62940711f9d95503 /drivers/net/ipa/ipa_modem.c | |
| parent | cf8dfe6ab8e7854905b13e7f46d39a2aba687825 (diff) | |
net: ipa: add clock reference for remoteproc SSR
The remoteproc SSR callback function for the modem requires hardware
access when handling a modem crash or shutdown. Take and later
release an IPA clock reference in ipa_modem_crashed(), to ensure the
hardware is operational.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ipa/ipa_modem.c')
| -rw-r--r-- | drivers/net/ipa/ipa_modem.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/ipa/ipa_modem.c b/drivers/net/ipa/ipa_modem.c index c851e2cf1255..a744b81db0d9 100644 --- a/drivers/net/ipa/ipa_modem.c +++ b/drivers/net/ipa/ipa_modem.c @@ -20,6 +20,7 @@ #include "ipa_smp2p.h" #include "ipa_qmi.h" #include "ipa_uc.h" +#include "ipa_clock.h" #define IPA_NETDEV_NAME "rmnet_ipa%d" #define IPA_NETDEV_TAILROOM 0 /* for padding by mux layer */ @@ -279,6 +280,8 @@ static void ipa_modem_crashed(struct ipa *ipa) struct device *dev = &ipa->pdev->dev; int ret; + ipa_clock_get(ipa); + ipa_endpoint_modem_pause_all(ipa, true); ipa_endpoint_modem_hol_block_clear_all(ipa); @@ -303,6 +306,8 @@ static void ipa_modem_crashed(struct ipa *ipa) ret = ipa_mem_zero_modem(ipa); if (ret) dev_err(dev, "error %d zeroing modem memory regions\n", ret); + + ipa_clock_put(ipa); } static int ipa_modem_notify(struct notifier_block *nb, unsigned long action, |