[PATCH RFC v3 2/2] mmc: host: sdhci-msm: Avoid reprogram keys for QCOM socs

[Seshu Madhavi Puppala]

Implement Qualcomm hook to avoid reprogram of all
keys to Inline Crypto Engine on runtime suspend resume
of MMC since keys are not lost for QCOM socs.

Signed-off-by: Seshu Madhavi Puppala <quic_spuppala@xxxxxxxxxxx>
Co-developed-by: Ram Prakash Gupta <quic_rampraka@xxxxxxxxxxx>
Signed-off-by: Ram Prakash Gupta <quic_rampraka@xxxxxxxxxxx>
---
 drivers/mmc/host/sdhci-msm.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c
index e113b99a3eab..427e0126459a 100644
--- a/drivers/mmc/host/sdhci-msm.c
+++ b/drivers/mmc/host/sdhci-msm.c
@@ -1183,6 +1183,11 @@ static void sdhci_msm_set_cdr(struct sdhci_host *host, bool enable)
 	}
 }
 
+static bool sdhci_msm_avoid_reprogram_allkeys(void)
+{
+	return true;
+}
+
 static int sdhci_msm_execute_tuning(struct mmc_host *mmc, u32 opcode)
 {
 	struct sdhci_host *host = mmc_priv(mmc);
@@ -2641,6 +2646,7 @@ static int sdhci_msm_probe(struct platform_device *pdev)
 	host->mmc_host_ops.start_signal_voltage_switch =
 		sdhci_msm_start_signal_voltage_switch;
 	host->mmc_host_ops.execute_tuning = sdhci_msm_execute_tuning;
+	host->mmc_host_ops.avoid_reprogram_allkeys = sdhci_msm_avoid_reprogram_allkeys;
 	if (of_property_read_bool(node, "supports-cqe"))
 		ret = sdhci_msm_cqe_add_host(host, pdev);
 	else
-- 
2.17.1