| Message ID | 20240826091703.14631-1-sh8267.baek@samsung.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | None | expand |
On 26/08/24 12:17, Seunghwan Baek wrote: The subject starts with "[Patch 2/2]" but is there another patch? Did you mean "[Patch v2] ..."? > To check if mmc cqe is in halt state, need to check set/clear of CQHCI_HALT > bit. At this time, we need to check with &, not &&. Therefore, code to> check whether cqe is in halt state is modified to cqhci_halted, which has > already been implemented. Doesn't compile: drivers/mmc/host/cqhci-core.c: In function ‘__cqhci_enable’: drivers/mmc/host/cqhci-core.c:285:13: error: implicit declaration of function ‘cqhci_halted’; did you mean ‘cqhci_writel’? [-Werror=implicit-function-declaration] 285 | if (cqhci_halted(cq_host)) | ^~~~~~~~~~~~ | cqhci_writel drivers/mmc/host/cqhci-core.c: At top level: drivers/mmc/host/cqhci-core.c:956:13: error: conflicting types for ‘cqhci_halted’; have ‘bool(struct cqhci_host *)’ {aka ‘_Bool(struct cqhci_host *)’} 956 | static bool cqhci_halted(struct cqhci_host *cq_host) | ^~~~~~~~~~~~ drivers/mmc/host/cqhci-core.c:285:13: note: previous implicit declaration of ‘cqhci_halted’ with type ‘int()’ 285 | if (cqhci_halted(cq_host)) | ^~~~~~~~~~~~ cc1: all warnings being treated as errors Not only should it compile, but you must test it! Probably better to make 2 patches: 1. Just the fix, cc stable i.e. diff --git a/drivers/mmc/host/cqhci-core.c b/drivers/mmc/host/cqhci-core.c index c14d7251d0bb..a02da26a1efd 100644 --- a/drivers/mmc/host/cqhci-core.c +++ b/drivers/mmc/host/cqhci-core.c @@ -617,7 +617,7 @@ static int cqhci_request(struct mmc_host *mmc, struct mmc_request *mrq) cqhci_writel(cq_host, 0, CQHCI_CTL); mmc->cqe_on = true; pr_debug("%s: cqhci: CQE on\n", mmc_hostname(mmc)); - if (cqhci_readl(cq_host, CQHCI_CTL) && CQHCI_HALT) { + if (cqhci_readl(cq_host, CQHCI_CTL) & CQHCI_HALT) { pr_err("%s: cqhci: CQE failed to exit halt state\n", mmc_hostname(mmc)); } 2. Tidy up, no cc stable diff --git a/drivers/mmc/host/cqhci-core.c b/drivers/mmc/host/cqhci-core.c index a02da26a1efd..178277d90c31 100644 --- a/drivers/mmc/host/cqhci-core.c +++ b/drivers/mmc/host/cqhci-core.c @@ -33,6 +33,11 @@ struct cqhci_slot { #define CQHCI_HOST_OTHER BIT(4) }; +static bool cqhci_halted(struct cqhci_host *cq_host) +{ + return cqhci_readl(cq_host, CQHCI_CTL) & CQHCI_HALT; +} + static inline u8 *get_desc(struct cqhci_host *cq_host, u8 tag) { return cq_host->desc_base + (tag * cq_host->slot_sz); @@ -282,7 +287,7 @@ static void __cqhci_enable(struct cqhci_host *cq_host) cqhci_writel(cq_host, cqcfg, CQHCI_CFG); - if (cqhci_readl(cq_host, CQHCI_CTL) & CQHCI_HALT) + if (cqhci_halted(cq_host)) cqhci_writel(cq_host, 0, CQHCI_CTL); mmc->cqe_on = true; @@ -617,7 +622,7 @@ static int cqhci_request(struct mmc_host *mmc, struct mmc_request *mrq) cqhci_writel(cq_host, 0, CQHCI_CTL); mmc->cqe_on = true; pr_debug("%s: cqhci: CQE on\n", mmc_hostname(mmc)); - if (cqhci_readl(cq_host, CQHCI_CTL) & CQHCI_HALT) { + if (cqhci_halted(cq_host)) { pr_err("%s: cqhci: CQE failed to exit halt state\n", mmc_hostname(mmc)); } @@ -953,11 +958,6 @@ static bool cqhci_clear_all_tasks(struct mmc_host *mmc, unsigned int timeout) return ret; } -static bool cqhci_halted(struct cqhci_host *cq_host) -{ - return cqhci_readl(cq_host, CQHCI_CTL) & CQHCI_HALT; -} - static bool cqhci_halt(struct mmc_host *mmc, unsigned int timeout) { struct cqhci_host *cq_host = mmc->cqe_private; > > Fixes: 0653300224a6 ("mmc: cqhci: rename cqhci.c to cqhci-core.c") Fixes tag should be the commit that introduced the code, not one that moved it. In this case, it has been there since the beginning: Fixes: a4080225f51d ("mmc: cqhci: support for command queue enabled host") Looks like the offending code kinda worked which explains why it wasn't noticed sooner. > Cc: stable@vger.kernel.org > Signed-off-by: Seunghwan Baek <sh8267.baek@samsung.com> > --- > drivers/mmc/host/cqhci-core.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/mmc/host/cqhci-core.c b/drivers/mmc/host/cqhci-core.c > index c14d7251d0bb..3d5bcb92c78e 100644 > --- a/drivers/mmc/host/cqhci-core.c > +++ b/drivers/mmc/host/cqhci-core.c > @@ -282,7 +282,7 @@ static void __cqhci_enable(struct cqhci_host *cq_host) > > cqhci_writel(cq_host, cqcfg, CQHCI_CFG); > > - if (cqhci_readl(cq_host, CQHCI_CTL) & CQHCI_HALT) > + if (cqhci_halted(cq_host)) > cqhci_writel(cq_host, 0, CQHCI_CTL); > > mmc->cqe_on = true; > @@ -617,7 +617,7 @@ static int cqhci_request(struct mmc_host *mmc, struct mmc_request *mrq) > cqhci_writel(cq_host, 0, CQHCI_CTL); > mmc->cqe_on = true; > pr_debug("%s: cqhci: CQE on\n", mmc_hostname(mmc)); > - if (cqhci_readl(cq_host, CQHCI_CTL) && CQHCI_HALT) { > + if (cqhci_halted(cq_host)) { > pr_err("%s: cqhci: CQE failed to exit halt state\n", > mmc_hostname(mmc)); > }
> The subject starts with "[Patch 2/2]" but is there another patch? > Did you mean "[Patch v2] ..."? > > > To check if mmc cqe is in halt state, need to check set/clear of > > CQHCI_HALT bit. At this time, we need to check with &, not &&. > > Therefore, code to> check whether cqe is in halt state is modified to > cqhci_halted, which has already been implemented. > > Doesn't compile: > > drivers/mmc/host/cqhci-core.c: In function ‘__cqhci_enable’: > drivers/mmc/host/cqhci-core.c:285:13: error: implicit declaration of > function ‘cqhci_halted’; did you mean ‘cqhci_writel’? [-Werror=implicit- > function-declaration] > 285 | if (cqhci_halted(cq_host)) > | ^~~~~~~~~~~~ > | cqhci_writel > drivers/mmc/host/cqhci-core.c: At top level: > drivers/mmc/host/cqhci-core.c:956:13: error: conflicting types for > ‘cqhci_halted’; have ‘bool(struct cqhci_host *)’ {aka ‘_Bool(struct > cqhci_host *)’} > 956 | static bool cqhci_halted(struct cqhci_host *cq_host) > | ^~~~~~~~~~~~ > drivers/mmc/host/cqhci-core.c:285:13: note: previous implicit declaration > of ‘cqhci_halted’ with type ‘int()’ > 285 | if (cqhci_halted(cq_host)) > | ^~~~~~~~~~~~ > cc1: all warnings being treated as errors > > Not only should it compile, but you must test it! > > Probably better to make 2 patches: > 1. Just the fix, cc stable i.e. > > diff --git a/drivers/mmc/host/cqhci-core.c b/drivers/mmc/host/cqhci-core.c > index c14d7251d0bb..a02da26a1efd 100644 > --- a/drivers/mmc/host/cqhci-core.c > +++ b/drivers/mmc/host/cqhci-core.c > @@ -617,7 +617,7 @@ static int cqhci_request(struct mmc_host *mmc, struct > mmc_request *mrq) > cqhci_writel(cq_host, 0, CQHCI_CTL); > mmc->cqe_on = true; > pr_debug("%s: cqhci: CQE on\n", mmc_hostname(mmc)); > - if (cqhci_readl(cq_host, CQHCI_CTL) && CQHCI_HALT) { > + if (cqhci_readl(cq_host, CQHCI_CTL) & CQHCI_HALT) { > pr_err("%s: cqhci: CQE failed to exit halt state\n", > mmc_hostname(mmc)); > } > > 2. Tidy up, no cc stable > > diff --git a/drivers/mmc/host/cqhci-core.c b/drivers/mmc/host/cqhci-core.c > index a02da26a1efd..178277d90c31 100644 > --- a/drivers/mmc/host/cqhci-core.c > +++ b/drivers/mmc/host/cqhci-core.c > @@ -33,6 +33,11 @@ struct cqhci_slot { > #define CQHCI_HOST_OTHER BIT(4) > }; > > +static bool cqhci_halted(struct cqhci_host *cq_host) { > + return cqhci_readl(cq_host, CQHCI_CTL) & CQHCI_HALT; } > + > static inline u8 *get_desc(struct cqhci_host *cq_host, u8 tag) { > return cq_host->desc_base + (tag * cq_host->slot_sz); @@ -282,7 > +287,7 @@ static void __cqhci_enable(struct cqhci_host *cq_host) > > cqhci_writel(cq_host, cqcfg, CQHCI_CFG); > > - if (cqhci_readl(cq_host, CQHCI_CTL) & CQHCI_HALT) > + if (cqhci_halted(cq_host)) > cqhci_writel(cq_host, 0, CQHCI_CTL); > > mmc->cqe_on = true; > @@ -617,7 +622,7 @@ static int cqhci_request(struct mmc_host *mmc, struct > mmc_request *mrq) > cqhci_writel(cq_host, 0, CQHCI_CTL); > mmc->cqe_on = true; > pr_debug("%s: cqhci: CQE on\n", mmc_hostname(mmc)); > - if (cqhci_readl(cq_host, CQHCI_CTL) & CQHCI_HALT) { > + if (cqhci_halted(cq_host)) { > pr_err("%s: cqhci: CQE failed to exit halt state\n", > mmc_hostname(mmc)); > } > @@ -953,11 +958,6 @@ static bool cqhci_clear_all_tasks(struct mmc_host > *mmc, unsigned int timeout) > return ret; > } > > -static bool cqhci_halted(struct cqhci_host *cq_host) -{ > - return cqhci_readl(cq_host, CQHCI_CTL) & CQHCI_HALT; > -} > - > static bool cqhci_halt(struct mmc_host *mmc, unsigned int timeout) { > struct cqhci_host *cq_host = mmc->cqe_private; > > > > > > > Fixes: 0653300224a6 ("mmc: cqhci: rename cqhci.c to cqhci-core.c") > > Fixes tag should be the commit that introduced the code, not one that > moved it. In this case, it has been there since the beginning: > > Fixes: a4080225f51d ("mmc: cqhci: support for command queue enabled host") > > Looks like the offending code kinda worked which explains why it wasn't > noticed sooner. > Sorry for my mistake. I will make the patch again as you advised. Thank you for your help. > > Cc: stable@vger.kernel.org > > Signed-off-by: Seunghwan Baek <sh8267.baek@samsung.com> > > --- > > drivers/mmc/host/cqhci-core.c | 4 ++-- > > 1 file changed, 2 insertions(+), 2 deletions(-) > > > > diff --git a/drivers/mmc/host/cqhci-core.c > > b/drivers/mmc/host/cqhci-core.c index c14d7251d0bb..3d5bcb92c78e > > 100644 > > --- a/drivers/mmc/host/cqhci-core.c > > +++ b/drivers/mmc/host/cqhci-core.c > > @@ -282,7 +282,7 @@ static void __cqhci_enable(struct cqhci_host > > *cq_host) > > > > cqhci_writel(cq_host, cqcfg, CQHCI_CFG); > > > > - if (cqhci_readl(cq_host, CQHCI_CTL) & CQHCI_HALT) > > + if (cqhci_halted(cq_host)) > > cqhci_writel(cq_host, 0, CQHCI_CTL); > > > > mmc->cqe_on = true; > > @@ -617,7 +617,7 @@ static int cqhci_request(struct mmc_host *mmc, > struct mmc_request *mrq) > > cqhci_writel(cq_host, 0, CQHCI_CTL); > > mmc->cqe_on = true; > > pr_debug("%s: cqhci: CQE on\n", mmc_hostname(mmc)); > > - if (cqhci_readl(cq_host, CQHCI_CTL) && CQHCI_HALT) { > > + if (cqhci_halted(cq_host)) { > > pr_err("%s: cqhci: CQE failed to exit halt state\n", > > mmc_hostname(mmc)); > > }
diff --git a/drivers/mmc/host/cqhci-core.c b/drivers/mmc/host/cqhci-core.c index c14d7251d0bb..3d5bcb92c78e 100644 --- a/drivers/mmc/host/cqhci-core.c +++ b/drivers/mmc/host/cqhci-core.c @@ -282,7 +282,7 @@ static void __cqhci_enable(struct cqhci_host *cq_host) cqhci_writel(cq_host, cqcfg, CQHCI_CFG); - if (cqhci_readl(cq_host, CQHCI_CTL) & CQHCI_HALT) + if (cqhci_halted(cq_host)) cqhci_writel(cq_host, 0, CQHCI_CTL); mmc->cqe_on = true; @@ -617,7 +617,7 @@ static int cqhci_request(struct mmc_host *mmc, struct mmc_request *mrq) cqhci_writel(cq_host, 0, CQHCI_CTL); mmc->cqe_on = true; pr_debug("%s: cqhci: CQE on\n", mmc_hostname(mmc)); - if (cqhci_readl(cq_host, CQHCI_CTL) && CQHCI_HALT) { + if (cqhci_halted(cq_host)) { pr_err("%s: cqhci: CQE failed to exit halt state\n", mmc_hostname(mmc)); }
To check if mmc cqe is in halt state, need to check set/clear of CQHCI_HALT bit. At this time, we need to check with &, not &&. Therefore, code to check whether cqe is in halt state is modified to cqhci_halted, which has already been implemented. Fixes: 0653300224a6 ("mmc: cqhci: rename cqhci.c to cqhci-core.c") Cc: stable@vger.kernel.org Signed-off-by: Seunghwan Baek <sh8267.baek@samsung.com> --- drivers/mmc/host/cqhci-core.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)