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Bottomley" , "Martin K. Petersen" Cc: linux-arm-msm@vger.kernel.org, linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, Manivannan Sadhasivam X-Mailer: b4 0.12.4 X-Developer-Signature: v=1; a=openpgp-sha256; l=1242; i=manivannan.sadhasivam@linaro.org; h=from:subject:message-id; bh=QMLyC7z7wrC4cQg2eqM+Dfe+kl12AbyhXTxgQxg+dJQ=; b=owEBbQGS/pANAwAKAVWfEeb+kc71AcsmYgBmDVeJkgfnxTwqt6pwLJcFG/ywaqATm2PYnOmoZ 8RiTomJs4KJATMEAAEKAB0WIQRnpUMqgUjL2KRYJ5dVnxHm/pHO9QUCZg1XiQAKCRBVnxHm/pHO 9WqlCACHiwIXIUVyW6PYemRimdhM9VGxKicBAzA1Xm4P8Jt7Xrv2D/sBmrrRoQ2ogK400Qpg9/G zyg6R9fpCortdbyi1rWC8JVtgeZGaM1GB1XeDq6Mdrtjt2nO41OaktIhw+oqtfSotEyBJCw13jb ItvI64Qq6igYPNiMd5WdO9Imo0yJuVQJ9tPcknCAHmzzWqCDDg7HaO03OJEjQf+O4KoU2WS2AOs 6pttNv6l5wDwvSzq19R1TG/eypF21m0hvxKRibAiKXO2TzqFtFndSI46tAIJd9zwxt3Kqx8pz/F bzI75lQksPSBnACjD+eg0zC78/FKcKIJFv622CeEIvRXX8nf X-Developer-Key: i=manivannan.sadhasivam@linaro.org; a=openpgp; fpr=C668AEC3C3188E4C611465E7488550E901166008 Let's add the checks to warn the user if the ICC scaling is not supported for the gear/lane values and also fallback to the max value if that's the case. Signed-off-by: Manivannan Sadhasivam Reviewed-by: Andrew Halaney --- drivers/ufs/host/ufs-qcom.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c index 696540ca835e..79b4ce05f7c5 100644 --- a/drivers/ufs/host/ufs-qcom.c +++ b/drivers/ufs/host/ufs-qcom.c @@ -696,6 +696,16 @@ static struct __ufs_qcom_bw_table ufs_qcom_get_bw_table(struct ufs_qcom_host *ho int gear = max_t(u32, p->gear_rx, p->gear_tx); int lane = max_t(u32, p->lane_rx, p->lane_tx); + if (WARN_ONCE(gear > QCOM_UFS_MAX_GEAR, + "ICC scaling for UFS Gear (%d) not supported. Using Gear (%d) bandwidth\n", + gear, QCOM_UFS_MAX_GEAR)) + gear = QCOM_UFS_MAX_GEAR; + + if (WARN_ONCE(lane > QCOM_UFS_MAX_LANE, + "ICC scaling for UFS Lane (%d) not supported. Using Lane (%d) bandwidth\n", + lane, QCOM_UFS_MAX_LANE)) + lane = QCOM_UFS_MAX_LANE; + if (ufshcd_is_hs_mode(p)) { if (p->hs_rate == PA_HS_MODE_B) return ufs_qcom_bw_table[MODE_HS_RB][gear][lane];