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Revert "FROMLIST: scsi: ufs: core: Fix the code for entering hibernation"

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Revert commit 6dcad5bb22 because it won't
be merged in the upstream kernel.

Bug: 344761008
Change-Id: Ie459f2f7e6a68b96e20fed9fa2ae47ff310877c0
Signed-off-by: Bart Van Assche <bvanassche@google.com>
This commit is contained in:
Bart Van Assche 2024-09-11 14:34:07 -07:00
parent 28620a2c5e
commit 6d7177caf9
2 changed files with 19 additions and 10 deletions
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16
drivers/ufs/core/ufshcd.c
View File

@ -2464,7 +2464,6 @@ int ufshcd_send_uic_cmd(struct ufs_hba *hba, struct uic_command *uic_cmd)
ufshcd_hold(hba);
mutex_lock(&hba->uic_cmd_mutex);
ufshcd_add_delay_before_dme_cmd(hba);
WARN_ON(hba->uic_async_done);
ret = __ufshcd_send_uic_cmd(hba, uic_cmd, true);
if (!ret)
@ -4169,6 +4168,7 @@ static int ufshcd_uic_pwr_ctrl(struct ufs_hba *hba, struct uic_command *cmd)
unsigned long flags;
u8 status;
int ret;
bool reenable_intr = false;
mutex_lock(&hba->uic_cmd_mutex);
ufshcd_add_delay_before_dme_cmd(hba);
@ -4179,6 +4179,15 @@ static int ufshcd_uic_pwr_ctrl(struct ufs_hba *hba, struct uic_command *cmd)
goto out_unlock;
}
hba->uic_async_done = &uic_async_done;
if (ufshcd_readl(hba, REG_INTERRUPT_ENABLE) & UIC_COMMAND_COMPL) {
ufshcd_disable_intr(hba, UIC_COMMAND_COMPL);
/*
* Make sure UIC command completion interrupt is disabled before
* issuing UIC command.
*/
wmb();
reenable_intr = true;
}
spin_unlock_irqrestore(hba->host->host_lock, flags);
ret = __ufshcd_send_uic_cmd(hba, cmd, false);
if (ret) {
@ -4222,6 +4231,8 @@ out:
spin_lock_irqsave(hba->host->host_lock, flags);
hba->active_uic_cmd = NULL;
hba->uic_async_done = NULL;
if (reenable_intr)
ufshcd_enable_intr(hba, UIC_COMMAND_COMPL);
if (ret) {
ufshcd_set_link_broken(hba);
ufshcd_schedule_eh_work(hba);
@ -5388,12 +5399,11 @@ static irqreturn_t ufshcd_uic_cmd_compl(struct ufs_hba *hba, u32 intr_status)
hba->errors |= (UFSHCD_UIC_HIBERN8_MASK & intr_status);
if (intr_status & UIC_COMMAND_COMPL && cmd) {
if (!hba->uic_async_done) {
cmd->argument2 |= ufshcd_get_uic_cmd_result(hba);
cmd->argument3 = ufshcd_get_dme_attr_val(hba);
if (!hba->uic_async_done)
cmd->cmd_active = 0;
complete(&cmd->done);
}
retval = IRQ_HANDLED;
}

7
include/ufs/ufshcd.h
View File

@ -876,10 +876,9 @@ enum ufshcd_mcq_opr {
* @tmf_tag_set: TMF tag set.
* @tmf_queue: Used to allocate TMF tags.
* @tmf_rqs: array with pointers to TMF requests while these are in progress.
* @active_uic_cmd: active UIC command pointer.
* @uic_cmd_mutex: mutex used to serialize UIC command processing.
* @uic_async_done: completion used to wait for power mode or hibernation state
* changes.
* @active_uic_cmd: handle of active UIC command
* @uic_cmd_mutex: mutex for UIC command
* @uic_async_done: completion used during UIC processing
* @ufshcd_state: UFSHCD state
* @eh_flags: Error handling flags
* @intr_mask: Interrupt Mask Bits