| Message ID | fc6f6d67b8cee0beace4a9d9cca7431e5efa769d.1588630999.git.mirq-linux@rere.qmqm.pl (mailing list archive) |
|---|---|
| State | Accepted, archived |
| Headers | show |
| Series | clk: at91: support configuring more clocks via DT | expand |
On 05/05/2020 00:37:56+0200, Michał Mirosław wrote: > Alloc whole data structure in one block. This makes the code shorter, > more efficient and easier to extend in following patch. > > Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> > --- > v2: rebase and update to clk/clk-at91 branch > v3: use struct_size() and C99 trailing array > as suggested by Stephen Boyd > v4: fixed sign-off > v5: no changes > v6: no changes > v7: pull all pmc_data_free() from second patch (a rebase artifact) > --- > drivers/clk/at91/at91rm9200.c | 2 +- > drivers/clk/at91/at91sam9260.c | 2 +- > drivers/clk/at91/at91sam9g45.c | 2 +- > drivers/clk/at91/at91sam9n12.c | 2 +- > drivers/clk/at91/at91sam9rl.c | 2 +- > drivers/clk/at91/at91sam9x5.c | 2 +- > drivers/clk/at91/pmc.c | 34 ++++++++-------------------------- > drivers/clk/at91/pmc.h | 3 ++- > drivers/clk/at91/sam9x60.c | 2 +- > drivers/clk/at91/sama5d2.c | 2 +- > drivers/clk/at91/sama5d3.c | 2 +- > drivers/clk/at91/sama5d4.c | 2 +- > 12 files changed, 20 insertions(+), 37 deletions(-) > > diff --git a/drivers/clk/at91/at91rm9200.c b/drivers/clk/at91/at91rm9200.c > index c44a431b6c97..6f4e1151553d 100644 > --- a/drivers/clk/at91/at91rm9200.c > +++ b/drivers/clk/at91/at91rm9200.c > @@ -187,7 +187,7 @@ static void __init at91rm9200_pmc_setup(struct device_node *np) > return; > > err_free: > - pmc_data_free(at91rm9200_pmc); > + kfree(at91rm9200_pmc); > } > /* > * While the TCB can be used as the clocksource, the system timer is most likely > diff --git a/drivers/clk/at91/at91sam9260.c b/drivers/clk/at91/at91sam9260.c > index a9d4234758d7..946f03a09858 100644 > --- a/drivers/clk/at91/at91sam9260.c > +++ b/drivers/clk/at91/at91sam9260.c > @@ -462,7 +462,7 @@ static void __init at91sam926x_pmc_setup(struct device_node *np, > return; > > err_free: > - pmc_data_free(at91sam9260_pmc); > + kfree(at91sam9260_pmc); > } > > static void __init at91sam9260_pmc_setup(struct device_node *np) > diff --git a/drivers/clk/at91/at91sam9g45.c b/drivers/clk/at91/at91sam9g45.c > index 38a7d2d2df0c..53e8252b8a63 100644 > --- a/drivers/clk/at91/at91sam9g45.c > +++ b/drivers/clk/at91/at91sam9g45.c > @@ -210,7 +210,7 @@ static void __init at91sam9g45_pmc_setup(struct device_node *np) > return; > > err_free: > - pmc_data_free(at91sam9g45_pmc); > + kfree(at91sam9g45_pmc); > } > /* > * The TCB is used as the clocksource so its clock is needed early. This means > diff --git a/drivers/clk/at91/at91sam9n12.c b/drivers/clk/at91/at91sam9n12.c > index 8bb39d2ba84b..f3ae1cd3cb8d 100644 > --- a/drivers/clk/at91/at91sam9n12.c > +++ b/drivers/clk/at91/at91sam9n12.c > @@ -228,7 +228,7 @@ static void __init at91sam9n12_pmc_setup(struct device_node *np) > return; > > err_free: > - pmc_data_free(at91sam9n12_pmc); > + kfree(at91sam9n12_pmc); > } > /* > * The TCB is used as the clocksource so its clock is needed early. This means > diff --git a/drivers/clk/at91/at91sam9rl.c b/drivers/clk/at91/at91sam9rl.c > index 77fe83a73bf4..cc739d214ae3 100644 > --- a/drivers/clk/at91/at91sam9rl.c > +++ b/drivers/clk/at91/at91sam9rl.c > @@ -166,6 +166,6 @@ static void __init at91sam9rl_pmc_setup(struct device_node *np) > return; > > err_free: > - pmc_data_free(at91sam9rl_pmc); > + kfree(at91sam9rl_pmc); > } > CLK_OF_DECLARE_DRIVER(at91sam9rl_pmc, "atmel,at91sam9rl-pmc", at91sam9rl_pmc_setup); > diff --git a/drivers/clk/at91/at91sam9x5.c b/drivers/clk/at91/at91sam9x5.c > index 086cf0b4955c..aac99d699568 100644 > --- a/drivers/clk/at91/at91sam9x5.c > +++ b/drivers/clk/at91/at91sam9x5.c > @@ -278,7 +278,7 @@ static void __init at91sam9x5_pmc_setup(struct device_node *np, > return; > > err_free: > - pmc_data_free(at91sam9x5_pmc); > + kfree(at91sam9x5_pmc); > } > > static void __init at91sam9g15_pmc_setup(struct device_node *np) > diff --git a/drivers/clk/at91/pmc.c b/drivers/clk/at91/pmc.c > index b71515acdec1..ac46ea1b9fda 100644 > --- a/drivers/clk/at91/pmc.c > +++ b/drivers/clk/at91/pmc.c > @@ -76,48 +76,30 @@ struct clk_hw *of_clk_hw_pmc_get(struct of_phandle_args *clkspec, void *data) > return ERR_PTR(-EINVAL); > } > > -void pmc_data_free(struct pmc_data *pmc_data) > -{ > - kfree(pmc_data->chws); > - kfree(pmc_data->shws); > - kfree(pmc_data->phws); > - kfree(pmc_data->ghws); > -} > - > struct pmc_data *pmc_data_allocate(unsigned int ncore, unsigned int nsystem, > unsigned int nperiph, unsigned int ngck) > { > - struct pmc_data *pmc_data = kzalloc(sizeof(*pmc_data), GFP_KERNEL); > + unsigned int num_clks = ncore + nsystem + nperiph + ngck; > + struct pmc_data *pmc_data; > > + pmc_data = kzalloc(struct_size(pmc_data, hwtable, num_clks), > + GFP_KERNEL); > if (!pmc_data) > return NULL; > > pmc_data->ncore = ncore; > - pmc_data->chws = kcalloc(ncore, sizeof(struct clk_hw *), GFP_KERNEL); > - if (!pmc_data->chws) > - goto err; > + pmc_data->chws = pmc_data->hwtable; > > pmc_data->nsystem = nsystem; > - pmc_data->shws = kcalloc(nsystem, sizeof(struct clk_hw *), GFP_KERNEL); > - if (!pmc_data->shws) > - goto err; > + pmc_data->shws = pmc_data->chws + ncore; > > pmc_data->nperiph = nperiph; > - pmc_data->phws = kcalloc(nperiph, sizeof(struct clk_hw *), GFP_KERNEL); > - if (!pmc_data->phws) > - goto err; > + pmc_data->phws = pmc_data->shws + nsystem; > > pmc_data->ngck = ngck; > - pmc_data->ghws = kcalloc(ngck, sizeof(struct clk_hw *), GFP_KERNEL); > - if (!pmc_data->ghws) > - goto err; > + pmc_data->ghws = pmc_data->phws + nperiph; > > return pmc_data; > - > -err: > - pmc_data_free(pmc_data); > - > - return NULL; > } > > #ifdef CONFIG_PM > diff --git a/drivers/clk/at91/pmc.h b/drivers/clk/at91/pmc.h > index 9b8db9cdcda5..fc3ef772b9d9 100644 > --- a/drivers/clk/at91/pmc.h > +++ b/drivers/clk/at91/pmc.h > @@ -24,6 +24,8 @@ struct pmc_data { > struct clk_hw **phws; > unsigned int ngck; > struct clk_hw **ghws; > + > + struct clk_hw *hwtable[]; > }; > > struct clk_range { > @@ -95,7 +97,6 @@ struct clk_pcr_layout { > #define nck(a) (a[ARRAY_SIZE(a) - 1].id + 1) > struct pmc_data *pmc_data_allocate(unsigned int ncore, unsigned int nsystem, > unsigned int nperiph, unsigned int ngck); > -void pmc_data_free(struct pmc_data *pmc_data); > > int of_at91_get_clk_range(struct device_node *np, const char *propname, > struct clk_range *range); > diff --git a/drivers/clk/at91/sam9x60.c b/drivers/clk/at91/sam9x60.c > index cc19e8fb83be..a7d4f648db26 100644 > --- a/drivers/clk/at91/sam9x60.c > +++ b/drivers/clk/at91/sam9x60.c > @@ -299,7 +299,7 @@ static void __init sam9x60_pmc_setup(struct device_node *np) > return; > > err_free: > - pmc_data_free(sam9x60_pmc); > + kfree(sam9x60_pmc); > } > /* Some clks are used for a clocksource */ > CLK_OF_DECLARE(sam9x60_pmc, "microchip,sam9x60-pmc", sam9x60_pmc_setup); > diff --git a/drivers/clk/at91/sama5d2.c b/drivers/clk/at91/sama5d2.c > index ff7e3f727082..b2560670e5af 100644 > --- a/drivers/clk/at91/sama5d2.c > +++ b/drivers/clk/at91/sama5d2.c > @@ -350,6 +350,6 @@ static void __init sama5d2_pmc_setup(struct device_node *np) > return; > > err_free: > - pmc_data_free(sama5d2_pmc); > + kfree(sama5d2_pmc); > } > CLK_OF_DECLARE_DRIVER(sama5d2_pmc, "atmel,sama5d2-pmc", sama5d2_pmc_setup); > diff --git a/drivers/clk/at91/sama5d3.c b/drivers/clk/at91/sama5d3.c > index 88506f909c08..914e6f225510 100644 > --- a/drivers/clk/at91/sama5d3.c > +++ b/drivers/clk/at91/sama5d3.c > @@ -231,7 +231,7 @@ static void __init sama5d3_pmc_setup(struct device_node *np) > return; > > err_free: > - pmc_data_free(sama5d3_pmc); > + kfree(sama5d3_pmc); > } > /* > * The TCB is used as the clocksource so its clock is needed early. This means > diff --git a/drivers/clk/at91/sama5d4.c b/drivers/clk/at91/sama5d4.c > index a6dee4a3b6e4..4ca9a4619500 100644 > --- a/drivers/clk/at91/sama5d4.c > +++ b/drivers/clk/at91/sama5d4.c > @@ -267,6 +267,6 @@ static void __init sama5d4_pmc_setup(struct device_node *np) > return; > > err_free: > - pmc_data_free(sama5d4_pmc); > + kfree(sama5d4_pmc); > } > CLK_OF_DECLARE_DRIVER(sama5d4_pmc, "atmel,sama5d4-pmc", sama5d4_pmc_setup); > -- > 2.20.1 >
diff --git a/drivers/clk/at91/at91rm9200.c b/drivers/clk/at91/at91rm9200.c index c44a431b6c97..6f4e1151553d 100644 --- a/drivers/clk/at91/at91rm9200.c +++ b/drivers/clk/at91/at91rm9200.c @@ -187,7 +187,7 @@ static void __init at91rm9200_pmc_setup(struct device_node *np) return; err_free: - pmc_data_free(at91rm9200_pmc); + kfree(at91rm9200_pmc); } /* * While the TCB can be used as the clocksource, the system timer is most likely diff --git a/drivers/clk/at91/at91sam9260.c b/drivers/clk/at91/at91sam9260.c index a9d4234758d7..946f03a09858 100644 --- a/drivers/clk/at91/at91sam9260.c +++ b/drivers/clk/at91/at91sam9260.c @@ -462,7 +462,7 @@ static void __init at91sam926x_pmc_setup(struct device_node *np, return; err_free: - pmc_data_free(at91sam9260_pmc); + kfree(at91sam9260_pmc); } static void __init at91sam9260_pmc_setup(struct device_node *np) diff --git a/drivers/clk/at91/at91sam9g45.c b/drivers/clk/at91/at91sam9g45.c index 38a7d2d2df0c..53e8252b8a63 100644 --- a/drivers/clk/at91/at91sam9g45.c +++ b/drivers/clk/at91/at91sam9g45.c @@ -210,7 +210,7 @@ static void __init at91sam9g45_pmc_setup(struct device_node *np) return; err_free: - pmc_data_free(at91sam9g45_pmc); + kfree(at91sam9g45_pmc); } /* * The TCB is used as the clocksource so its clock is needed early. This means diff --git a/drivers/clk/at91/at91sam9n12.c b/drivers/clk/at91/at91sam9n12.c index 8bb39d2ba84b..f3ae1cd3cb8d 100644 --- a/drivers/clk/at91/at91sam9n12.c +++ b/drivers/clk/at91/at91sam9n12.c @@ -228,7 +228,7 @@ static void __init at91sam9n12_pmc_setup(struct device_node *np) return; err_free: - pmc_data_free(at91sam9n12_pmc); + kfree(at91sam9n12_pmc); } /* * The TCB is used as the clocksource so its clock is needed early. This means diff --git a/drivers/clk/at91/at91sam9rl.c b/drivers/clk/at91/at91sam9rl.c index 77fe83a73bf4..cc739d214ae3 100644 --- a/drivers/clk/at91/at91sam9rl.c +++ b/drivers/clk/at91/at91sam9rl.c @@ -166,6 +166,6 @@ static void __init at91sam9rl_pmc_setup(struct device_node *np) return; err_free: - pmc_data_free(at91sam9rl_pmc); + kfree(at91sam9rl_pmc); } CLK_OF_DECLARE_DRIVER(at91sam9rl_pmc, "atmel,at91sam9rl-pmc", at91sam9rl_pmc_setup); diff --git a/drivers/clk/at91/at91sam9x5.c b/drivers/clk/at91/at91sam9x5.c index 086cf0b4955c..aac99d699568 100644 --- a/drivers/clk/at91/at91sam9x5.c +++ b/drivers/clk/at91/at91sam9x5.c @@ -278,7 +278,7 @@ static void __init at91sam9x5_pmc_setup(struct device_node *np, return; err_free: - pmc_data_free(at91sam9x5_pmc); + kfree(at91sam9x5_pmc); } static void __init at91sam9g15_pmc_setup(struct device_node *np) diff --git a/drivers/clk/at91/pmc.c b/drivers/clk/at91/pmc.c index b71515acdec1..ac46ea1b9fda 100644 --- a/drivers/clk/at91/pmc.c +++ b/drivers/clk/at91/pmc.c @@ -76,48 +76,30 @@ struct clk_hw *of_clk_hw_pmc_get(struct of_phandle_args *clkspec, void *data) return ERR_PTR(-EINVAL); } -void pmc_data_free(struct pmc_data *pmc_data) -{ - kfree(pmc_data->chws); - kfree(pmc_data->shws); - kfree(pmc_data->phws); - kfree(pmc_data->ghws); -} - struct pmc_data *pmc_data_allocate(unsigned int ncore, unsigned int nsystem, unsigned int nperiph, unsigned int ngck) { - struct pmc_data *pmc_data = kzalloc(sizeof(*pmc_data), GFP_KERNEL); + unsigned int num_clks = ncore + nsystem + nperiph + ngck; + struct pmc_data *pmc_data; + pmc_data = kzalloc(struct_size(pmc_data, hwtable, num_clks), + GFP_KERNEL); if (!pmc_data) return NULL; pmc_data->ncore = ncore; - pmc_data->chws = kcalloc(ncore, sizeof(struct clk_hw *), GFP_KERNEL); - if (!pmc_data->chws) - goto err; + pmc_data->chws = pmc_data->hwtable; pmc_data->nsystem = nsystem; - pmc_data->shws = kcalloc(nsystem, sizeof(struct clk_hw *), GFP_KERNEL); - if (!pmc_data->shws) - goto err; + pmc_data->shws = pmc_data->chws + ncore; pmc_data->nperiph = nperiph; - pmc_data->phws = kcalloc(nperiph, sizeof(struct clk_hw *), GFP_KERNEL); - if (!pmc_data->phws) - goto err; + pmc_data->phws = pmc_data->shws + nsystem; pmc_data->ngck = ngck; - pmc_data->ghws = kcalloc(ngck, sizeof(struct clk_hw *), GFP_KERNEL); - if (!pmc_data->ghws) - goto err; + pmc_data->ghws = pmc_data->phws + nperiph; return pmc_data; - -err: - pmc_data_free(pmc_data); - - return NULL; } #ifdef CONFIG_PM diff --git a/drivers/clk/at91/pmc.h b/drivers/clk/at91/pmc.h index 9b8db9cdcda5..fc3ef772b9d9 100644 --- a/drivers/clk/at91/pmc.h +++ b/drivers/clk/at91/pmc.h @@ -24,6 +24,8 @@ struct pmc_data { struct clk_hw **phws; unsigned int ngck; struct clk_hw **ghws; + + struct clk_hw *hwtable[]; }; struct clk_range { @@ -95,7 +97,6 @@ struct clk_pcr_layout { #define nck(a) (a[ARRAY_SIZE(a) - 1].id + 1) struct pmc_data *pmc_data_allocate(unsigned int ncore, unsigned int nsystem, unsigned int nperiph, unsigned int ngck); -void pmc_data_free(struct pmc_data *pmc_data); int of_at91_get_clk_range(struct device_node *np, const char *propname, struct clk_range *range); diff --git a/drivers/clk/at91/sam9x60.c b/drivers/clk/at91/sam9x60.c index cc19e8fb83be..a7d4f648db26 100644 --- a/drivers/clk/at91/sam9x60.c +++ b/drivers/clk/at91/sam9x60.c @@ -299,7 +299,7 @@ static void __init sam9x60_pmc_setup(struct device_node *np) return; err_free: - pmc_data_free(sam9x60_pmc); + kfree(sam9x60_pmc); } /* Some clks are used for a clocksource */ CLK_OF_DECLARE(sam9x60_pmc, "microchip,sam9x60-pmc", sam9x60_pmc_setup); diff --git a/drivers/clk/at91/sama5d2.c b/drivers/clk/at91/sama5d2.c index ff7e3f727082..b2560670e5af 100644 --- a/drivers/clk/at91/sama5d2.c +++ b/drivers/clk/at91/sama5d2.c @@ -350,6 +350,6 @@ static void __init sama5d2_pmc_setup(struct device_node *np) return; err_free: - pmc_data_free(sama5d2_pmc); + kfree(sama5d2_pmc); } CLK_OF_DECLARE_DRIVER(sama5d2_pmc, "atmel,sama5d2-pmc", sama5d2_pmc_setup); diff --git a/drivers/clk/at91/sama5d3.c b/drivers/clk/at91/sama5d3.c index 88506f909c08..914e6f225510 100644 --- a/drivers/clk/at91/sama5d3.c +++ b/drivers/clk/at91/sama5d3.c @@ -231,7 +231,7 @@ static void __init sama5d3_pmc_setup(struct device_node *np) return; err_free: - pmc_data_free(sama5d3_pmc); + kfree(sama5d3_pmc); } /* * The TCB is used as the clocksource so its clock is needed early. This means diff --git a/drivers/clk/at91/sama5d4.c b/drivers/clk/at91/sama5d4.c index a6dee4a3b6e4..4ca9a4619500 100644 --- a/drivers/clk/at91/sama5d4.c +++ b/drivers/clk/at91/sama5d4.c @@ -267,6 +267,6 @@ static void __init sama5d4_pmc_setup(struct device_node *np) return; err_free: - pmc_data_free(sama5d4_pmc); + kfree(sama5d4_pmc); } CLK_OF_DECLARE_DRIVER(sama5d4_pmc, "atmel,sama5d4-pmc", sama5d4_pmc_setup);
Alloc whole data structure in one block. This makes the code shorter, more efficient and easier to extend in following patch. Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> --- v2: rebase and update to clk/clk-at91 branch v3: use struct_size() and C99 trailing array as suggested by Stephen Boyd v4: fixed sign-off v5: no changes v6: no changes v7: pull all pmc_data_free() from second patch (a rebase artifact) --- drivers/clk/at91/at91rm9200.c | 2 +- drivers/clk/at91/at91sam9260.c | 2 +- drivers/clk/at91/at91sam9g45.c | 2 +- drivers/clk/at91/at91sam9n12.c | 2 +- drivers/clk/at91/at91sam9rl.c | 2 +- drivers/clk/at91/at91sam9x5.c | 2 +- drivers/clk/at91/pmc.c | 34 ++++++++-------------------------- drivers/clk/at91/pmc.h | 3 ++- drivers/clk/at91/sam9x60.c | 2 +- drivers/clk/at91/sama5d2.c | 2 +- drivers/clk/at91/sama5d3.c | 2 +- drivers/clk/at91/sama5d4.c | 2 +- 12 files changed, 20 insertions(+), 37 deletions(-)