[PATCH 4.18 101/158] ata: libahci: Correct setting of DEVSLP register

4.18-stable review patch. If anyone has any objections, please let me know. -- From: Srinivas Pandruvada [ Upstream commit 2dbb3ec29a6c069035857a2fc4c24e80e5dfe3cc ] We have seen that on some platforms, SATA device never show any DEVSLP residency. This prevent power gating of

[PATCH 4.18 101/158] ata: libahci: Correct setting of DEVSLP register

4.18-stable review patch. If anyone has any objections, please let me know. -- From: Srinivas Pandruvada [ Upstream commit 2dbb3ec29a6c069035857a2fc4c24e80e5dfe3cc ] We have seen that on some platforms, SATA device never show any DEVSLP residency. This prevent power gating of